PeterKellner.net » ObjectDataSource http://peterkellner.net Microsoft Focused, JavaScript,HTML5 (ExtJS, SenchaTouch & Windows 8 Metro) Fri, 11 May 2012 16:43:17 +0000 en hourly 1 http://wordpress.org/?v=3.3.2 With ASP.NET WebForms, How to Keep / Stop a Data Control Like GridView From Retrieving Data http://peterkellner.net/2011/08/01/with-asp-net-webforms-how-to-keep-stop-a-data-control-like-gridview-from-retrieving-data/?utm_source=rss&utm_medium=rss&utm_campaign=with-asp-net-webforms-how-to-keep-stop-a-data-control-like-gridview-from-retrieving-data http://peterkellner.net/2011/08/01/with-asp-net-webforms-how-to-keep-stop-a-data-control-like-gridview-from-retrieving-data/#comments Mon, 01 Aug 2011 21:35:00 +0000 Peter Kellner http://peterkellner.net/2011/08/01/with-asp-net-webforms-how-to-keep-stop-a-data-control-like-gridview-from-retrieving-data/ The What and Where

Something that may not be obvious is if are creating an asp.net WebForms project and you put a datasource such as SqlDataSource or ObjectDataSource for example on the page, how can you prevent the SqlSelect associated with that datasource from being triggered.

The answer is to set the control’s visible property to false.  That’s it!

 

The Why

The reason you might want to do this is for a case where you have a public facing web page that might be easily subjected to a denial of service attach.  If that web page is always causing some SqlDataSource to fire, you could easily find your SqlServer overloaded.  At least by checking to see a user is logged in before firing the sql statement, you buy yourself a little bit of protection.

 

The Code

<%@ Page Language="C#" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<script runat="server">

    protected void
        GridView1_SelectedIndexChanged(object sender, EventArgs e)
    {

    }

    protected void Page_Init(object sender, EventArgs e)
    {
        if (!Context.User.Identity.IsAuthenticated)
        {
            GridView1.Visible = false;
        }
    }
</script>

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <asp:SqlDataSource ID="SqlDataSource1" runat="server"
            ConnectionString="<%$ ConnectionStrings:CodeCampSV06 %>"
            SelectCommand=
            "SELECT [Id], [Username], [Email] FROM [Attendees] ORDER BY [Id] DESC">
            </asp:SqlDataSource>
        <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False"
            DataKeyNames="Id" DataSourceID="SqlDataSource1"
            onselectedindexchanged="GridView1_SelectedIndexChanged">
            <Columns>
                <asp:BoundField DataField="Id" HeaderText="Id" InsertVisible="False"
                    ReadOnly="True" SortExpression="Id" />
                <asp:BoundField DataField="Username" HeaderText="Username"
                    SortExpression="Username" />
                <asp:BoundField DataField="Email" HeaderText="Email"
                SortExpression="Email" />
            </Columns>
        </asp:GridView>
    </div>
    </form>
</body>
</html>
]]> http://peterkellner.net/2011/08/01/with-asp-net-webforms-how-to-keep-stop-a-data-control-like-gridview-from-retrieving-data/feed/ 0 Adding a List of Recent Posts To The Silicon Valley Code Camp Home Page (From RSS Feed) http://peterkellner.net/2010/09/12/simplerssreader-in-silicon-valley-code-camp-objectdatasource-repeater-aspnet/?utm_source=rss&utm_medium=rss&utm_campaign=simplerssreader-in-silicon-valley-code-camp-objectdatasource-repeater-aspnet http://peterkellner.net/2010/09/12/simplerssreader-in-silicon-valley-code-camp-objectdatasource-repeater-aspnet/#comments Sun, 12 Sep 2010 21:44:26 +0000 Peter Kellner http://peterkellner.net/2010/09/12/simplerssreader-in-silicon-valley-code-camp-objectdatasource-repeater-aspnet/ There are 10,000 ways to do this.  Back way back when (ASP.NET 1.1) days, we would have created either a custom control to do this, then added a Repeater control on the page to display it.  Well, the Silicon Valley Code Camp Website was started back in those days and since what I want is so simple, I decided to do just that (minus the custom control).  I really only wanted to spend about 10 minutes doing this, and as it turned out, it took about 30.  Oh well, 3x plan verses execution.  Could do better next time.

So, here is basically what I want on the left side bar of the home page of Silicon Valley Code Camp:

RSS Feed Look

 

First, I’ll attach my simple project I build to do this standalone so you can run it yourself, then, I’ll do a quick step through of the key code. 

All that is really in this project is a simple c# class file that contains a business object and one get method to retrieve the list.  That file is called RSSFeed.cs.  I’ve pasted all the code of that class below:

using System.Collections.Generic;using System.ComponentModel;using System.Linq;using System.Xml.Linq;

namespace App_Code{    [DataObject(true)]    public class RSSFeedObject    {

        [DataObjectMethod(DataObjectMethodType.Select, true)]        public List<RSSItem> Get(int numberToGet)        {            XDocument feedXML = XDocument.Load              ("http://blog.siliconvalley-codecamp.com/feed/");

            var feeds = feedXML.Descendants("item").                Select(feed => new                   {                       PostTitle = feed.Element("title").Value,                       PostURL = feed.Element("link").Value                   });            var rssItems = new List<RSSItem>();            int id = 0;            foreach (var rec in feeds)            {                rssItems.Add(new RSSItem                                (id,rec.PostTitle,rec.PostURL));                id++;                if (id >= numberToGet)                {                    break;                }            }            return rssItems;                            }

    }

    public class RSSItem    {        [DataObjectField(true)]        public int Id { get; set; }

        [DataObjectField(false)]        public string PostTitle { get; set; }

        [DataObjectField(false)]        public string PostURL { get; set; }

        public RSSItem(int id, string postTitle,                        string postURL)        {            Id = id;            PostTitle = postTitle;            PostURL = postURL;        }    }}

Then, in the Default.aspx page, you can simply reference this object with a Repeater and an ObjectDataSource and you are done!  That is it, very simple.  Below is the page code.

<asp:ObjectDataSource ID="ObjectDataSourceRSS" runat="server"   SelectMethod="Get" TypeName="App_Code.RSSFeedObject">   <SelectParameters>       <asp:Parameter DefaultValue="5" Name="numberToGet" Type="Int32" />   </SelectParameters></asp:ObjectDataSource><asp:Repeater ID="RepeaterRSS" runat="server" DataSourceID="ObjectDataSourceRSS">   <HeaderTemplate>       <ul>   </HeaderTemplate>   <FooterTemplate>       </ul>   </FooterTemplate>   <ItemTemplate>       <li>           <asp:HyperLink ID="HyperLinkURL" runat="server"                NavigateUrl='<%# Eval("PostURL") %>'               Text='<%# Eval("PostTitle") %>'></asp:HyperLink>       </li>   </ItemTemplate></asp:Repeater>

I’m sure someone is going to point out how this could have been done in three lines of code.  Until then, I’ll keep this in the Silicon Valley Code Camp site.

BTW, if the site looks different, it’s because a wizard html/css guy has come by and cleaned it up to look good. What you see in the top screen shot is what it looks like without any formatting.  Just unordered list and listitems with no formatting.

HTH’s!

]]> http://peterkellner.net/2010/09/12/simplerssreader-in-silicon-valley-code-camp-objectdatasource-repeater-aspnet/feed/ 0 ExtJS Meetup Tonight in San Francisco, Sample URLs of Running Code Here http://peterkellner.net/2009/05/14/extjs-meetup-aspnet-code-samples/?utm_source=rss&utm_medium=rss&utm_campaign=extjs-meetup-aspnet-code-samples http://peterkellner.net/2009/05/14/extjs-meetup-aspnet-code-samples/#comments Thu, 14 May 2009 14:47:59 +0000 Peter Kellner http://peterkellner.net/2009/05/14/extjs-meetup-aspnet-code-samples/ At tonight’s meet up, we will be having several short presentations on the new features in ExtJS version 3.0.  For my short presentation, I will be showing how to build a simple asp.net application that lets you Create, Update, Delete and Edit Membership data using the ASP.NET built in membership providers.  I will be leverage code from an MSDN article I wrote a while back here along with the URL to the meetup location.

http://www.meetup.com/The-San-Francisco-ExtJS-Meetup-Group/calendar/10302891/

http://msdn.microsoft.com/en-us/library/aa478947.aspx

My plan is to do a progression where I start with a trivial GridPanel, then work myself in 5 steps to a full working membership editor that looks like this:

image

 

If you want to to run the code I will be explaining tonight, here are some links:

http://aspnetextjsdemo.peterkellner.net/ExtJSProfileEditorASimpleGrid.html

http://aspnetextjsdemo.peterkellner.net/ExtJSProfileEditorBMoreGrid.html

http://aspnetextjsdemo.peterkellner.net/ExtJSProfileEditorCMoreGridWithPaging.html

http://aspnetextjsdemo.peterkellner.net/ExtJSProfileEditorDMoreGridEditing.html

http://aspnetextjsdemo.peterkellner.net/ExtJSProfileEditorEAddDeleteToolbar.html

If you want a more complete demonstration of ExtJS in general along with more details of the code, I’m presenting a full length version of this at he Bay.Net Meeting in Microsoft next Wednesday evening.  Here are the full details.  These events are both community events are free.

http://www.baynetug.org/DesktopModules/DetailXEvents.aspx?ItemID=378&mid=49

Hope to see you at one of the events!

]]> http://peterkellner.net/2009/05/14/extjs-meetup-aspnet-code-samples/feed/ 4 How to Retrieve a GridView Based on a CheckBoxList of Items with Asp.Net using ObjectDataSource with a little LINQ Thrown In http://peterkellner.net/2008/12/07/checkboxlist-gridview-aspnet-howto-mutiple-selections/?utm_source=rss&utm_medium=rss&utm_campaign=checkboxlist-gridview-aspnet-howto-mutiple-selections http://peterkellner.net/2008/12/07/checkboxlist-gridview-aspnet-howto-mutiple-selections/#comments Sun, 07 Dec 2008 06:08:02 +0000 Peter Kellner http://peterkellner.net/?p=210 So, the problem is you have a list that you want to retrieve from that contains multiple values.  Say for example, you have a list of 5 cities and you want to retrieve a list of people in some combination of those cities.  If you use the class SelectValue method with GridView you run out of steam because it’s only one value.  What you’d really like to do is pass the CheckBoxList into the GridView as a selection parameter, but unfortunately, when you do that, you just get the one selected value from the CheckBoxList, not all the values.

I’m sure you can make a custom ControlParameter in ObjectDataSource to solve this, but I really don’t have time for that.  I just wanted something quick (which I now have and thought I’d share).

Basically, what I did was create an invisible label on my GridView that will get the string of values I want to retrieve, then, my ObjectDataSource gets one value (the string) and parses it into small values.  My plan is to do a quick run through of the code here, but then also post the project so you can see for yourself how it works.

Here we go.

First, let’s make a simple BusinessObject class that returns to us some data.  The basic object that will be returned is the Person defined as follows:

 public class Person
    {
        public Person()
        {
        }
 
        public Person(string _name, int _id)
        {
            this._name = _name;
            this._id = _id;
        }
 
        private string _name;
        private int _id;
 
        public string name
        {
            get { return _name; }
            set { _name = value; }
        }
 
        public int id
        {
            get { return _id; }
            set { _id = value; }
        }
    }

Next, we need two methods, the first is the method that does the heavy lifting (that is, takes a list of integers and returns the final list of people who have those cities in them, then, we need the method that polymorphically calls (did I spell that wrong, live writer thinks so… sorry) that method whose input is a single string.  That method parses the string (which was assembled in page_load of the calling page) and calls the first one.

So, here is the method ObjectDataSource actually calls to get it’s view of the data (remember, ObjectDataSource only returns one view).

 public List<Person> GetPeopleByCityList(List<int> cityList)
        {
            List<Person> personList = new List<Person>
                                          {
                                              new Person("Peter_SanJose", 1),
                                              new Person("Tom_Hartsdale", 2),
                                              new Person("Eric_Chicago", 3),
                                              new Person("Ron_SanJose", 1),
                                              new Person("John_Chicago", 3),
                                              new Person("Charly_Scarsdale", 4)
                                          };
 
            var personResult = from p in personList
                               where cityList.Contains(p.id)
                               orderby p.name
                               select p;
 
            return personResult.ToList();
        }
 
        public List<Person> GetPeopleByCityListString(string cityListString)
        {
            if (!String.IsNullOrEmpty(cityListString))
            {
                var values = cityListString.Split(';');
                var cityList = new List<int>();
                foreach (string s in values)
                {
                    cityList.Add(Convert.ToInt32(s));
                }
 
                return GetPeopleByCityList(cityList);
            }
            return null;
        }
 
    }

Now, the method that actually does the work.  Notice I’m using the C# 3.0 object initializer syntax to build it, but normally, you’d be calling a database or something like that here.  Also notice the clever LINQ that does the equivalent of an SQL IN clause.  That is, we’d normally be doing something like "Select .. From Person Where CityId IN (1,3..)).  It seems a little backwards to me, but it does the job.

So, now we have the business object, let’s put it to work.  Let’s build a simple aspx page that has a CheckBoxList, GridView,Label and a Button.  I’ll pre-populate the CheckBoxList just to keep my example simple.  Normally, you’d be getting that data from another data source like a database.

So, Here is the aspx file we built.

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
</head>
<body bgcolor="#00ccff">
    <form id="form1" runat="server">
    <div>
        <asp:Button ID="ButtonSearch" runat="server" Text="Retrieve" 
            onclick="ButtonSearch_Click" />
        <asp:Label ID="Label1" runat="server" Visible="false" Text="Label"></asp:Label>
        <asp:CheckBoxList ID="CheckBoxList1" runat="server">
            <asp:ListItem Value="2">Hartsdale</asp:ListItem>
            <asp:ListItem Value="4">Scarsdale</asp:ListItem>
            <asp:ListItem Value="3">Chicago</asp:ListItem>
            <asp:ListItem Value="1">San Jose</asp:ListItem>
        </asp:CheckBoxList>
        <asp:ObjectDataSource ID="ObjectDataSource1" runat="server" SelectMethod="GetPeopleByCityListString"
            TypeName="BO.BusinessObject">
            <SelectParameters>
                <asp:ControlParameter ControlID="Label1" Name="cityListString" PropertyName="Text"
                    Type="String" />
            </SelectParameters>
        </asp:ObjectDataSource>
        <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" 
            DataSourceID="ObjectDataSource1">
            <Columns>
                <asp:BoundField DataField="name" HeaderText="name" SortExpression="name" />
                <asp:BoundField DataField="id" HeaderText="id" SortExpression="id" />
            </Columns>
        </asp:GridView>
    </div>
    </form>
</body>
</html>

Notice that the asp controlparameter is passing the Label1 contents to the ObjectDataSource.  To load that, we need to put some code in the Page_Load event that will set that line.  Here is that code.  It simply reads the checkboxlist and builds the string of numbers (3,5,7,9.).

I’m pretty sure that is it.  Now, when you run the web site, you’ll get a screen that you can click multiple checkboxes on and get all the results that correspond with that checkbox.  Here is what it should look like:

image_thumb1

Hope this Helps!  And, if you it the better way by making a custom ControlParameter, post it here and we can all ignore this article.  Smile

 

]]> http://peterkellner.net/2008/12/07/checkboxlist-gridview-aspnet-howto-mutiple-selections/feed/ 3 Assigning a Custom Label Value in a ASP.NET GridView Using ObjectDataSource http://peterkellner.net/2008/08/06/assign-label-in-aspdotnet-to-gridview-in-objectdatasource/?utm_source=rss&utm_medium=rss&utm_campaign=assign-label-in-aspdotnet-to-gridview-in-objectdatasource http://peterkellner.net/2008/08/06/assign-label-in-aspdotnet-to-gridview-in-objectdatasource/#comments Wed, 06 Aug 2008 14:10:07 +0000 Peter Kellner http://peterkellner.net/2008/08/06/assign-label-in-aspdotnet-to-gridview-in-objectdatasource/ In my previous post, Assigning a DropDownList Value in a ASP.NET GridView Using ObjectDataSource, I discussed how to put a DropDownList value in a GridView.  As I explained, my motivation was to answer a common question that appears on often on the forums.  If you are wondering what my process is for deciding what to answer, there really is no process besides I see yet another question on the forum about this, and rather than answer it again, I write a post explaining it, then point my answer to the question at the post.  This is what I did yesterday and below is the response to this forum post.

x

So, I have to say one of my main motivations for doing posts is I enjoy helping others through problems.  It gives me a certain satisfaction to know that I have knowledge others may not at any give time and I have a great way to share that knowledge.  It also makes me feel good when others go out of their way to appreciate the effort.  I know when I post questions on forums and get good answers how happy I am, it’s good to know others appreciate my efforts.

So, continuing down that path, Here is the code necessary to answer Zimbran’s last question.


<%@ Page Language="C#" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" 
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
</script>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title>ODS DDL Example</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <asp:ObjectDataSource ID="ObjectDataSource1" runat="server" 
            SelectMethod="GetMembers"
            TypeName="BusinessObject"></asp:ObjectDataSource>
        <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" 
               DataKeyNames="Id"
            DataSourceID="ObjectDataSource1">
            <Columns>
                <asp:BoundField DataField="Id" HeaderText="Id" ReadOnly="True" 
                   SortExpression="Id" />
                <asp:BoundField DataField="Name" HeaderText="Name" SortExpression="Name" />
                <asp:BoundField DataField="Email" HeaderText="Email" SortExpression="Email" />
                <asp:TemplateField HeaderText="Approved" SortExpression="Approved">
                    <ItemTemplate>
                        <asp:Label ID="LabelYesOrNo" runat="server" 
                           Text='<%# (bool) Eval("Approved") ? "Yes" : "No"  %>'></asp:Label>
                    </ItemTemplate>
                </asp:TemplateField>
            </Columns>
        </asp:GridView>
    </div>
    </form>
</body>
</html>
]]> http://peterkellner.net/2008/08/06/assign-label-in-aspdotnet-to-gridview-in-objectdatasource/feed/ 2 Assigning a DropDownList Value in a ASP.NET GridView Using ObjectDataSource http://peterkellner.net/2008/08/05/assign-dropdownlist-in-aspdotnet-to-gridview-in-objectdatasource/?utm_source=rss&utm_medium=rss&utm_campaign=assign-dropdownlist-in-aspdotnet-to-gridview-in-objectdatasource http://peterkellner.net/2008/08/05/assign-dropdownlist-in-aspdotnet-to-gridview-in-objectdatasource/#comments Tue, 05 Aug 2008 23:57:14 +0000 Peter Kellner http://peterkellner.net/2008/08/05/assign-dropdownlist-in-aspdotnet-to-gridview-in-objectdatasource/ As a moderator in the asp.net forums, I often see the same or similar questions.  The answer to this question is pretty straight forward but not 100% obvious so I thought I’d do a post about in the hopes that with a couple key words, people will find the answer.  The title basically says it all.  We have a GridView that has a data column of type bool.  We want to display in the GridView Yes or No depending on whether the data value is true or false.  The example I’m showing does not help with making this an editable field (maybe a theme for another post if this one is popular) but simply shows yes or no.

The solution involves first dropping a GridView and ObjectDataSource onto your design surface in Visual Studio.  Then, using the little chevron on the GridView, choose edit columns and convert the column you are interested in making a DropDownList into a template.  From there replace the ItemTemplate with the DropDownList code below.  You get the code below.

 

<%@ Page Language="C#" %>
 
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" 
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
 
<script runat="server">
 
</script>
 
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title>ODS DDL Example</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <asp:ObjectDataSource ID="ObjectDataSource1" runat="server" SelectMethod="GetMembers"
            TypeName="BusinessObject"></asp:ObjectDataSource>
        <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" DataKeyNames="Id"
            DataSourceID="ObjectDataSource1">
            <Columns>
                <asp:BoundField DataField="Id" HeaderText="Id" ReadOnly="True" SortExpression="Id" />
                <asp:BoundField DataField="Name" HeaderText="Name" SortExpression="Name" />
                <asp:BoundField DataField="Email" HeaderText="Email" SortExpression="Email" />
                <asp:TemplateField HeaderText="Approved" SortExpression="Approved">
                    <ItemTemplate>
                        <asp:DropDownList ID="DropDownListUser" runat="server" AutoPostBack="False" 
                            SelectedValue='<%# Bind("Approved") %>'>
                            <asp:ListItem Text="Yes" Value="True"></asp:ListItem>
                            <asp:ListItem Text="No" Value="False"></asp:ListItem>
                        </asp:DropDownList>
                    </ItemTemplate>
                </asp:TemplateField>
            </Columns>
        </asp:GridView>
    </div>
    </form>
</body>
</html>

 

And, when you run this code (assuming you have a simple business object that returns some data), you get this:

 

x

Hope this helps!

]]> http://peterkellner.net/2008/08/05/assign-dropdownlist-in-aspdotnet-to-gridview-in-objectdatasource/feed/ 7 Using Using in c# ado.net business classes used with ObjectDataSource in ASP.NET 2.0 http://peterkellner.net/2007/10/29/usingusinghowto/?utm_source=rss&utm_medium=rss&utm_campaign=usingusinghowto http://peterkellner.net/2007/10/29/usingusinghowto/#comments Tue, 30 Oct 2007 01:28:57 +0000 Peter Kellner http://peterkellner.net/2007/10/29/usingusinghowto/ So, I’ve been preaching for a long time that it’s best to use the Using pattern when working with anything that implements IDisposable.  That way, you don’t have to worry about calling Dispose, or calling Close.  The framework will just do it for you.  I’ve answered this question on the forums several times so I thought I’d past some code I’m doing right now for simple ado.net stuff.  It’s actually code that is inside a business object that I hook up to an ObjectDataSource in asp.net 2.0.

The code is posted below.  I think you’ll get the idea.

[DataObjectMethod(DataObjectMethodType.Select, false)]

public List<DataObjectCategory> GetByPrimaryKey(int id)

{

string sqlWhere = String.Format(" WHERE id={0} ", id);

return GetByRawSQL(string.Empty, sqlWhere);

}

 

private List<DataObjectCategory> GetByRawSQL(string sortData, string sqlWhereClause)

{

string sqlBaseString = "SELECT ContentTypeId,Description,SortOrder,Id FROM Category ";

List<DataObjectCategory> DataTemplateODSList = new List<DataObjectCategory>();

using (SqlConnection conn = new SqlConnection(connectionString))

{

    conn.Open();

    if (!String.IsNullOrEmpty(sqlWhereClause))

    {

        sqlBaseString += sqlWhereClause;

    }

    using (SqlCommand cmd = new SqlCommand(sqlBaseString, conn))

    {

        using (SqlDataReader reader = cmd.ExecuteReader())

        {

            try

            {

                while (reader.Read())

                {

                    int contenttypeid = reader.IsDBNull(0) ? 0 : reader.GetInt32(0);

                    string description = reader.IsDBNull(1) ? "" : reader.GetString(1);

                    int sortorder = reader.IsDBNull(2) ? 0 : reader.GetInt32(2);

                    int id = reader.IsDBNull(3) ? 0 : reader.GetInt32(3);

                    DataObjectCategory td = new DataObjectCategory(contenttypeid,

                        description, sortorder, id);

                    DataTemplateODSList.Add(td);

                }

            }

            catch (Exception ee)

            {

                throw new ApplicationException(ee.ToString());

            }

        }

    }

}

Hope this helps!

]]> http://peterkellner.net/2007/10/29/usingusinghowto/feed/ 1 How to Set the Default Value of a DropDownList in an ASP.NET Page http://peterkellner.net/2007/10/17/dropdownlistdefaultsetting/?utm_source=rss&utm_medium=rss&utm_campaign=dropdownlistdefaultsetting http://peterkellner.net/2007/10/17/dropdownlistdefaultsetting/#comments Wed, 17 Oct 2007 17:44:13 +0000 Peter Kellner http://peterkellner.net/2007/10/17/dropdownlistdefaultsetting/ This article shows how to set the default Value of a DropDownList Control when using asp.net 2.0. It uses the DataBound event to do it. A full page example which can be cut and paste is included

]]> (Using Membership ObjectDataSource From MSDN Article)

I’m doing a project where I have lots of DropDownList’s on a page and want a simple way to set the initial values based on some known value.  The DropDownLists are retrieved using ObjectDataSource but I don’t want the first value displayed.  I wrestled some with how to do this using page_load or page_prerender but didn’t come up with good solutions.  I did finally
decide that programming the databound event of the dropdownlist was probably the best way to go.

The solution is pasted below.  The MembershipUtilities.MembershipODS c# code can be downloaded from MSDN or on my web site at the following location. 

http://peterkellner.net/2006/01/09/microsoft-aspnet-20-memberrole-management-with-iis/.


<%@ Page Language=”C#” %>
<!DOCTYPE html PUBLIC “-//W3C//DTD XHTML 1.0 Transitional//EN”

  “http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd”>

<script runat=”server”>
    protected void DropDownListUser_DataBound(object sender, EventArgs e)

    {
        DropDownListUser.SelectedIndex =
          DropDownListUser.Items.IndexOf
          (DropDownListUser.Items.FindByValue(Context.User.Identity.Name));
    }
</script>

<html xmlns=”http://www.w3.org/1999/xhtml” >
<head runat=”server”>
    <title>DropDownList Initialize</title>
</head>
<body>
    <form id=”form1″ runat=”server”>
    <div>
        <asp:DropDownList ID=”DropDownListUser” runat=”server”
          DataSourceID=”ObjectDataSourceUser”
          DataTextField=”UserName” DataValueField=”UserName”
          OnDataBound=”DropDownListUser_DataBound”>
        </asp:DropDownList>
        <asp:ObjectDataSource ID=”ObjectDataSourceUser” runat=”server”
          SelectMethod=”GetMembers”
          TypeName=”MembershipUtilities.MembershipUserODS”>
            <SelectParameters>
                <asp:Parameter Name=”sortData” Type=”String” />
            </SelectParameters>
        </asp:ObjectDataSource>
    </div>
    </form>
</body>
</html>
]]> http://peterkellner.net/2007/10/17/dropdownlistdefaultsetting/feed/ 23 Silicon Valley Code Camp Integrates the DevExpress Cloud Control for Sessions http://peterkellner.net/2007/09/04/cloudcontrolforcodecamp/?utm_source=rss&utm_medium=rss&utm_campaign=cloudcontrolforcodecamp http://peterkellner.net/2007/09/04/cloudcontrolforcodecamp/#comments Tue, 04 Sep 2007 19:11:58 +0000 Peter Kellner http://peterkellner.net/2007/09/04/cloudcontrolforcodecamp/ Recently, is seems that many web sites and blogs are starting to use a navigation technique where you have multiple hyperlinks grouped in a box, with size, color, or brightness giving some meaning.  I like this very much and have been on the lookout for a while for a control to do this in ASP.NET.  Turns out, DevExpress has one!  It’s called the CloudControl and you can read more about it at the following URL.

 http://www.devexpress.com/Products/NET/WebForms/ASPxCloudControl/Index.xml

So, now, where to use it?  Code Camp of course!  Now, if you browse to the Sessions listing, you’ll see the DevExpress Cloud Control in use.

Silicon Valley Code Camp Cloud Control

You can see this control in action at our web site here: 

http://www.siliconvalley-codecamp.com/Sessions.aspx

My experience with using this control was great!  Easy to setup.  Below is all the code I needed on my asp page to make it happen.

 

private Parameter __BuildControl__control6()
{
    Parameter parameter1 = new Parameter();
    parameter1.Name = “Username”;
    parameter1.Type = TypeCode.String;
    parameter1.DefaultValue = “<% User.Identity.Name %>”;
    return parameter1;
}

It’s pretty obvious that unless there is a username of the literal string "<% User.Identity.Name %>" no records will be find. This simply means that the build provider asp.net uses is not generating any code for us with sqldatasource that will help with the DefaultValue of parameters in a SqlDataSource.

The Solution

Expression Builder to the rescue!

To solve the problem, we need to build a simple expression builder. Without going into all the details of what an expression builder is, all you need to do is put the following code in your app_code directory and call it something like ExpressionBuilderIdentity.cs.

using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Web.Compilation;
using System.CodeDom;

public class ExpressionBuilderIdentity : ExpressionBuilder
{
    public override System.CodeDom.CodeExpression GetCodeExpression(
        BoundPropertyEntry entry, object parsedData, ExpressionBuilderContext context)
    {
        CodeTypeReferenceExpression targetClass =
            new CodeTypeReferenceExpression(typeof(ExpressionBuilderIdentity));
        string targetMethod = “GetIdentity”;
        CodeExpression methodParameter =
            new CodePrimitiveExpression(entry.Expression.Trim());
        return new CodeMethodInvokeExpression(
            targetClass, targetMethod, methodParameter);
    }

    public static object GetIdentity(string param)
    {
        string returnString = string.Empty;

        if (param.ToLower().Equals(“name”))
        {
            returnString = HttpContext.Current.User.Identity.Name;
        }

        return returnString;
    }
}

Then, you need to add a reference to it in your web.config as follows:

<compilation debug=“true“>
      <expressionBuilders>
        <add expressionPrefix=“UserIdentity“ type=“ExpressionBuilderIdentity, __code“/>
      </expressionBuilders>
      …

Then, specify the SqlDataSource as follows:

<asp:SqlDataSource ID=”SqlDataSource1″ runat=”server” ConnectionString=”&lt;%$ ConnectionStrings:CodeCampSV06 %&gt;“ SelectCommand=”SELECT [Username], [Email] FROM [Attendees] WHERE ([Username] = @Username)”>
            <SelectParameters>
                <asp:Parameter Name=”Username” Type=”String”
                DefaultValue=”&lt;%$ UserIdentity:name %&gt;“ />
            </SelectParameters>
        </asp:SqlDataSource>

And, Presto, it works!

Summary

Anytime you are using one of the new datasourceID controls, you need to use expressions rather than databinding if you want to reference outside variables. Creating the code is fairly straight forward and lends itself to lots of cool possibilities.

]]> http://peterkellner.net/2006/09/18/expressionbuilderidentity/feed/ 27 Rendering Images With IIS Verses an ASP.NET 2.0 Handler http://peterkellner.net/2006/09/04/iisaspnetperf/?utm_source=rss&utm_medium=rss&utm_campaign=iisaspnetperf http://peterkellner.net/2006/09/04/iisaspnetperf/#comments Tue, 05 Sep 2006 05:38:24 +0000 Peter Kellner http://peterkellner.net/2006/09/04/iisaspnetperf/ Performance Comparison

Recently, I’ve been wondering what the difference is between rendering an image using IIS’s built in file handling capabilities, or using the asp.net with a custom handler. I decided to do a little test program to simply see the difference in clock time for processing such requests. The results of this test clearly show that IIS is faster. Sometimes a little, and sometimes a lot. I decided to test three size images, and run them each 10 times. Often, there is a start up lag time so the iterations should wash that out.

The table below basically sums up the results pretty well. The resolution of my timer is not great so for small images (35KB), both IIS and the handler processed the image in under 15 milliseconds. There may be a difference but in
my case, it was probably not measurable because of all the other time involved in the request. For Medium size images (550KB), difference is more consistent. Again, it’s a timer resolution problem that makes 15 milliseconds probably something related to a CPU click of sorts. For large images (5.6MB) you can clearly see a difference. The time it takes for the handler to process the image is almost double that of IIS.

Just for the fun of it, if you want to run a URL that has the program that generated these numbers, you can by going to the URL: http://livedemos.peterkellner.net/ASPNETIISTiming.aspx and the numbers will recalculate live. A couple things to keep in mind here. First, the above URL is running on a hosted site with lots of other customers (specifically, it’s hosted at http://ultimahosts.net/ whom I recommend highly and it’s running with IIS 6.0.

If you want to experiment yourself with this, I’ve listed at the bottom of this article the class I associate with an ObjectDataSource to generate these numbers (as well as the HttpHandler and the aspx page). The tables are each GridView’s with incoming parameters to the ODS class of number of iterations and the image name in the /Images directory to process. It’s really very straight forward.

Conclusions

The conclusion is pretty obvious for large images. That is, IIS is better. There are times when you must use
a handler such as when you want to watermark your images or do other custom rendering. If, however that is not
necessary, better to rely on IIS to process the images. Something also to keep in mind is that if you use the
Wild Card Forwarding Option in IIS (only available in IIS6, not IIS5.1), the DefaultHttpHandler will automatically
get invoked for you on file types you do not specifically handle and those images will bounce back and get processed by
IIS 6.0. Here is a good reference from Dominick Baier describing how that works.

(GetWebData.cs) This is the class the ObjectDataSource References.

 

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.IO;

using System.Net;

using System.Web;

 

/// <summary>

/// Summary description for GetWebData

/// </summary>

///

[DataObject(true)] // This attribute allows the ObjectDataSource wizard to see this class

public class GetWebData

{

    /// <summary>

    /// This is the Select Method used with the class.

    /// filename should be the name of the file that is in the images directory

    /// </summary>

    /// <param name="iterations"></param>

    /// <param name="fileName"></param>

    /// <returns></returns>

    [DataObjectMethod(DataObjectMethodType.Select, true)]

    public List<ResultData> GetWebResults(int iterations, string fileName)

    {

        string absUri = HttpContext.Current.Request.Url.AbsoluteUri;

        string absoluteUri = absUri.Substring(0, absUri.LastIndexOf("/"));

        List<ResultData> list = new List<ResultData>(iterations);

        for (int i = 0; i < iterations; i++)

        {

            ResultData rd = new ResultData();

            rd.FromASPNET1 = ProcessWebRequest(absoluteUri + "/DisplayBMP.ashx?filename=" + fileName);

            rd.FromIIS = ProcessWebRequest(absoluteUri + "/Images/" + fileName);

            list.Add(rd);

        }

        return list;

    }

 

 

    /// <summary>

    /// This process the requestString passed in and returns

    /// the number of ms it took to do that.  It does nothing

    /// with the results

    /// </summary>

    /// <param name="requestString">complete URL</param>

    /// <returns>milliseconds in process</returns>

    private double ProcessWebRequest(string requestString)

    {

        // used on each read operation (big, 1.5MB)

        // normally, one read is enough, but if it is

        // bigger than 1.5 MB, then it will simply to

        // multiple reads which should not affect timing

        // very much is my guess.

        byte[] buf = new byte[1500000];

 

        // prepare the web page we will be asking for

        HttpWebRequest request = (HttpWebRequest)

                                WebRequest.Create(requestString);

        DateTime startTime = DateTime.Now;

 

        // execute the request

        HttpWebResponse response = (HttpWebResponse)

                                   request.GetResponse();

 

        // we will read data via the response stream

        Stream resStream = response.GetResponseStream();

 

        int count;

        int bytesRead = 0;

        do

        {

            // fill the buffer with data

            count = resStream.Read(buf, 0, buf.Length);

            // make sure we read some data

            if (count != 0)

            {

                bytesRead += count;

            }

        } while (count > 0); // any more data to read?

 

        DateTime stopTime = DateTime.Now;

        TimeSpan elapsedTime = stopTime – startTime;

        return elapsedTime.TotalMilliseconds;

    }

}

 

/// <summary>

/// A simple class to be used with Generic List

/// </summary>

public class ResultData

{

    private double FromASPNET;

 

    public double FromASPNET1

    {

        get { return Math.Floor(FromASPNET); }

        set { FromASPNET = value; }

    }

 

    private double fromIIS;

 

    public double FromIIS

    {

        get { return Math.Floor(fromIIS); }

        set { fromIIS = value; }

    }

}

 

(DisplayBMP.ashx) The Handler I’m using for the comparison.

<%@ WebHandler Language="C#" Class="DisplayBMP"  %>

 

using System;

using System.Web;

 

public class DisplayBMP : IHttpHandler {

 

   public void ProcessRequest (HttpContext context) {

 

        try

        {

            string fileName = context.Server.MapPath("Images/medium.bmp");

            if (HttpContext.Current.Request.QueryString["filename"] != null)

            {

                fileName = context.Server.MapPath("Images/" + HttpContext.Current.Request.QueryString["filename"]);

            }

            System.Drawing.Bitmap bitMap = new System.Drawing.Bitmap(fileName);

 

            System.IO.MemoryStream ms = new System.IO.MemoryStream();

            bitMap.Save(ms, System.Drawing.Imaging.ImageFormat.Bmp);

            byte[] byteArray = new byte[ms.Length];

            ms.Position = 0;

            ms.Read(byteArray, 0, Convert.ToInt32(ms.Length));

            ms.Close();

            ms.Dispose();

            bitMap.Dispose();

            context.Response.ContentType = "image/bmp";

            context.Response.BinaryWrite(byteArray);

        }

        catch (Exception ee)

        {

            throw new ApplicationException(ee.ToString());

        }

        finally

        {

 

        }

 

    }

    public bool IsReusable {

        get {

            return false;

        }

    }

 

}

 

(ASPNETIISTiming.aspx) The aspx page to pull it all together (nothing in the codebehind).

<%@ Page Language="C#" MasterPageFile="~/MasterPageNoHeadShot.master" AutoEventWireup="true" CodeFile="ASPNETIISTiming.aspx.cs" Inherits="ASPNETIISTiming" Title="Untitled Page" %>

<asp:Content ID="Content1" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server">

 

<div>

        <table border="1" cellpadding="15">

            <tr>

                <td colspan="3" style="text-align: center">

                    Time Shown is for comparing load time in milliseconds when loading an image from

                    IIS<br />

                    or using ASP.NET handler.<br />

                    <br />

                    For Further Discussion on this:<br />

                    <br />

                    <asp:HyperLink ID="HyperLink1" runat="server" NavigateUrl="http://peterkellner.net/IISASPNETPerf">http://peterkellner.net/IISASPNETPerf</asp:HyperLink></td>

            </tr>

            <tr>

                <td style="width: 100px">

                    Small Image (35KB)</td>

                <td style="width: 100px">

                    Medium Image (550KB)</td>

                <td style="width: 100px">

                    Large Image (5.6MB)</td>

            </tr>

            <tr>

                <td style="width: 100px">

                    <asp:GridView ID="GridView1" runat="server"
style="color: red;">AutoGenerateColumns="False"

          DataSourceID="ObjectDataSourceSmall">

                        <Columns>

                            <asp:BoundField DataField="FromIIS" HeaderText="FromIIS" SortExpression="FromIIS" />

                            <asp:BoundField DataField="FromASPNET1" HeaderText="FromASPNET1" SortExpression="FromASPNET1" />

                        </Columns>

                    </asp:GridView>

                </td>

                <td style="width: 100px">

                    <asp:GridView ID="GridView2" runat="server" AutoGenerateColumns="False"

          DataSourceID="ObjectDataSourceMedium">

                        <Columns>

                            <asp:BoundField DataField="FromIIS" HeaderText="FromIIS" SortExpression="FromIIS" />

                            <asp:BoundField DataField="FromASPNET1" HeaderText="FromASPNET1" SortExpression="FromASPNET1" />

                        </Columns>

                    </asp:GridView>

                </td>

                <td style="width: 100px">

                    <asp:GridView ID="GridView3" runat="server" AutoGenerateColumns="False"

          DataSourceID="ObjectDataSourceLarge">

                        <Columns>

                            <asp:BoundField DataField="FromIIS" HeaderText="FromIIS" SortExpression="FromIIS" />

                            <asp:BoundField DataField="FromASPNET1"
HeaderText="FromASPNET1" SortExpression="FromASPNET1" />

                        </Columns>

                    </asp:GridView>

                </td>

            </tr>

        </table>

        <br />

        <br />

        <asp:Button ID="Button1" runat="server" Text="Recalculate Times" Visible="False" /><br />

        &nbsp;&nbsp;

        <asp:ObjectDataSource ID="ObjectDataSourceMedium" runat="server" SelectMethod="GetWebResults"

            TypeName="GetWebData">

            <SelectParameters>

                <asp:Parameter DefaultValue="10" Name="iterations" Type="Int32" />

                <asp:Parameter DefaultValue="medium.bmp" Name="fileName" Type="String" />

            </SelectParameters>

        </asp:ObjectDataSource>

        <asp:ObjectDataSource ID="ObjectDataSourceSmall" runat="server" SelectMethod="GetWebResults"

            TypeName="GetWebData">

            <SelectParameters>

                <asp:Parameter DefaultValue="10" Name="iterations" Type="Int32" />

                <asp:Parameter DefaultValue="small.bmp" Name="fileName" Type="String" />

            </SelectParameters>

        </asp:ObjectDataSource>

        <asp:ObjectDataSource ID="ObjectDataSourceLarge" runat="server" SelectMethod="GetWebResults"

            TypeName="GetWebData">

            <SelectParameters>

                <asp:Parameter DefaultValue="10" Name="iterations" Type="Int32" />

                <asp:Parameter DefaultValue="large.bmp" Name="fileName" Type="String" />

            </SelectParameters>

        </asp:ObjectDataSource>

    </div>

 

</asp:Content>

 

]]> http://peterkellner.net/2006/09/04/iisaspnetperf/feed/ 6 Fourth MSDN Article Published! "Adding Personalization with Profiles to the ObjectDataSource" http://peterkellner.net/2006/09/04/addprofiletoods/?utm_source=rss&utm_medium=rss&utm_campaign=addprofiletoods http://peterkellner.net/2006/09/04/addprofiletoods/#comments Mon, 04 Sep 2006 18:55:33 +0000 Peter Kellner http://peterkellner.net/2006/09/04/addprofiletoods/ Microsoft just published my fourth article. This one is titled: "Microsoft ASP.NET 2.0 Member/Role Management with IIS, Part 4: Adding Personalization with Profiles to the ObjectDataSource".

You can find it on MSDN here, or on my blog here.

Here is the introduction.


Introduction

This article extends one of the web pages developed in Part II of this series using Microsoft’s Profile feature. In Part II, the Membership API was encapsulated in an ObjectDataSource. This allowed the developer to have a drop in web page for the web site administrator to use in an web site project for editing membership. This tools allowed for similar capability to the the web site manager tool included in Visual Studio 2005 (VS2005). It is necessary because using that web configuration tool included with VS2005 is problematic and should not be used in a production web site.

This article explains how the encapsulation of Membership can be extended to include Profile (personalization) information for users. The designers of Membership included a very basic set of attributes to associate with Members (logged in users). The Profile API provided by Microsoft allows for additional information to be attached to each member. Typically, this information would include things like: first name, last name, home address, favorite color schemes or anything else the developer may want to associate with a logged in member. By personalizing the site to the member logged in, it likely increases the chance the user will return and be more comfortable while visiting.

]]> http://peterkellner.net/2006/09/04/addprofiletoods/feed/ 12 Third Article Published on MSDN! ASP.NET 2.0, Membership Meets Atlas http://peterkellner.net/2006/08/02/third-article-published-on-msdn-aspnet-20-membership-meets-atlas/?utm_source=rss&utm_medium=rss&utm_campaign=third-article-published-on-msdn-aspnet-20-membership-meets-atlas http://peterkellner.net/2006/08/02/third-article-published-on-msdn-aspnet-20-membership-meets-atlas/#comments Wed, 02 Aug 2006 22:30:55 +0000 Peter Kellner http://peterkellner.net/?p=41 Microsoft just published my third article. This one is titled: "Member/Role Management with IIS, Part 3: AJAX Enhancements with Microsoft’s Atlas".

You can find it on MSDN here, or on my blog here.

Here is the introduction.

Introduction

This article extends one of the web pages developed in Part II of this series using Microsoft’s implementation of AJAX called Atlas. It utilized two techniques for reducing web server traffic to the browser to enhance the users web experience. The first technique uses the UpdatePanel tags to limit the refreshed area of the web page to limited areas and the second has to do with implementing some javascript using Atlas techniques so that the web page is updated on every key stroke in a textbox. A user list is displayed based on what is actively typed into this textbox. After reading this article the developer will be able to implement AJAX (Microsoft’s implementation Atlas) in their own application.

]]> http://peterkellner.net/2006/08/02/third-article-published-on-msdn-aspnet-20-membership-meets-atlas/feed/ 6 Inserting Programmatically with ObjectDataSource in ASP.NET 2.0 http://peterkellner.net/2006/06/07/inserting-programmatically-with-objectdatasource-in-aspnet-20/?utm_source=rss&utm_medium=rss&utm_campaign=inserting-programmatically-with-objectdatasource-in-aspnet-20 http://peterkellner.net/2006/06/07/inserting-programmatically-with-objectdatasource-in-aspnet-20/#comments Wed, 07 Jun 2006 20:21:02 +0000 Peter Kellner http://peterkellner.net/?p=37 ( ObjectDataSource1.Insert(); )

ObjectDataSource’s are great for building your own middle tier between your aspx web page and your database (or any other datastore for that matter). By binding the datasource to a databound server control like detailsview, you auto-magically get the insert behavior you are looking for. If however, you just just want to insert to the ObjectDataSource you have included on your aspx page without using a databound control, you don’t have a lot of fancy footwork to do. All you have to do is reference the insert parameter by name (or index offset) and assign it directly.

Below is an example of how to insert a Role into Membership using the ObjectDataSource developed in a my previous MSDN article Microsoft ASP.NET 2.0 Member/Role Management with IIS
Part 2: Implementation.


< %@ Page Language="C#" %>
< !DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<script runat="server">
protected void Button1_Click(object sender, EventArgs e)
{
  ObjectDataSource1.InsertParameters["roleName"].DefaultValue =
    TextBoxRole.Text;
  ObjectDataSource1.Insert();
}
</script>

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title>AddRoleWithODS.aspx</title>
</head>
<body>
<form id="form1" runat="server">
  <asp :ObjectDataSource ID="ObjectDataSource1" runat="server"
    InsertMethod="Insert"
    SelectMethod="GetRoles"
    TypeName="MembershipUtilities.RoleDataObject">
    <insertparameters>
      <asp  :P arameter Name="roleName" Type="String" />
    </insertparameters>
  </asp>
  <asp :Button ID="Button1" runat="server" Text="Add Role"
    OnClick="Button1_Click" />
  <asp :TextBox ID="TextBoxRole" runat="server">
    </asp>
</form>
</body>
</html>

If you do not want to declaratively define the ObjectDataSource and just want to use it directly, you can do that also. You simply reference the ObjectDataSource by Type and call its insert method. An example of that is below.

using System;
using System.Web.UI;
using MembershipUtilities;

public partial class Default3 : Page
{
  protected void Button1_Click(object sender, EventArgs e)
  {
    RoleDataObject.Insert(TextBox1.Text);
  }
}
]]> http://peterkellner.net/2006/06/07/inserting-programmatically-with-objectdatasource-in-aspnet-20/feed/ 11 Adding Personalization via Profiles to the ObjectDataSource in ASP.NET 2.0 http://peterkellner.net/2006/03/13/adding-personalization-via-profiles-to-the-objectdatasource-in-aspnet-20/?utm_source=rss&utm_medium=rss&utm_campaign=adding-personalization-via-profiles-to-the-objectdatasource-in-aspnet-20 http://peterkellner.net/2006/03/13/adding-personalization-via-profiles-to-the-objectdatasource-in-aspnet-20/#comments Tue, 14 Mar 2006 00:33:03 +0000 Peter Kellner http://peterkellner.net/?p=29 This article explains the mechanics involved in extending the ObjectDataSource (developed in the previous article in this MSDN Membership Security Series) to handle personalization information using the ASP.NET 2.0 custom provider facility. Then, it goes on to explains some fancy tricks you can do with this ObjectDataSource to make accessing membership even easier. Finally it presents a free tool available on the web that lets you cut and paste part of your web.config file into a web page and out comes a ready-to-compile C-Sharp ObjectDataSource.

]]> Also published on Microsoft’s MSDN Network at Microsoft ASP.NET 2.0 Member/Role Management with IIS, Part 4: Adding Personalization with Profiles to the ObjectDataSource

Applies to:

  • Microsoft ASP.NET 2.0
  • Microsoft Visual Studio 2005
  • Microsoft Internet Information Services

Run Live Demonstration Of Personalization in Membership Technology

Go to the Web Site to Create Your Own ObjectDataSource From Your Own Web.Config

Click Here for Source Code Associated With This Article

Microsoft ASP.NET 2.0 Member/Role Management with IIS, Part 2: Implementation

Contents

Introduction
Background
Why Do We Need This?
Adding Profile Information to the ObjectDataSource
Using the Profile Generating Website
Build A Simple Web Page
Conclusions

Introduction

This article extends one of the web pages developed in Part II of this series using Microsoft’s Profile feature. In Part II, the Membership API was encapsulated in an ObjectDataSource. This allowed the developer to have a drop in web page for the web site administrator to use in an web site project for editing membership. This tools allowed for similar capability to the the web site manager tool included in Visual Studio 2005 (VS2005). It is necessary because using that web configuration tool included with VS2005 is problematic and should not be used in a production web site.

This article explains how the encapsulation of Membership can be extended to include Profile (personalization) information for users. The designers of Membership included a very basic set of attributes to associate with Members (logged in users). The Profile API provided by Microsoft allows for additional information to be attached to each member. Typically, this information would include things like: first name, last name, home address, favorite color schemes or anything else the developer may want to associate with a logged in member. By personalizing the site to the member logged in, it likely increases the chance the user will return and be more comfortable while visiting.

Background

ASP.NET has done an outstanding job of making the profile information associated with a logged in user very easy to access programmatically. They have done this by using their Provider technology to create a typed class that the developer can access with intellisense property values. What does this mean? This means that the profile information is declaratively defined as XML in the web.config file. The example below shows the lines that have been added to the <system.web> section of the web.config.

 <system .web>
  <profile defaultProvider="SqlProfileProvider">
    <providers>
      <remove name="AspNetSqlProfileProvider"/>
      <add name="SqlProfileProvider"
       type="System.Web.Profile.SqlProfileProvider"
       connectionStringName="LocalSqlServer"/>
    </providers>
    <properties>
      <add name="FirstName" type="string"/>
      <add name="LastName" type="string"/>
      <add name="AdvancedMode" type="bool"/>
      <group name="Address">
        <add name="Street" type="string"/>
        <add name="City" type="string"/>
        <add name="State" type="string"/>
        <add name="Zip" type="string"/>
      </group>    </properties>  </profile>
</system>

These new properties defined by Microsoft can be accessed in C# at run time very simply. Below are a few lines of code showing how this can be done in a typical codebehind page. These lines of code are taken from the button update event on the page UpdateProfileSimple.aspx included in the download associated with this article.

 protected void ButtonUpdate_Click(object sender,
    EventArgs e)
{
  Profile.FirstName = TextBoxFirstName.Text;
  Profile.LastName = TextBoxLastName.Text;
  Profile.Save();
}

Profile is available everywhere because it is a static class generated from the Web.Config section shown above. Because it is an actual class, the properties FirstName and LastName are available from VS2005′s intellisense and are type safe. No incorrectly typing them and getting syntax errors.

In the simple example below (UpdateProfileSimple.aspx), it is necessary to first pre load the textboxes when the user logs in. This can be done in the pageload event as follows.

 protected void Page_Load(object sender, EventArgs e)
{
  // Only allow for profile update when a user is logged in
  MembershipUser mu = Membership.GetUser();
  if (mu == null)
  {
    ButtonUpdate.Enabled = false;
  }
  else
  {
    if (!IsPostBack)
    {
      TextBoxFirstName.Text = Profile.FirstName;
      TextBoxLastName.Text = Profile.LastName;
    }
  }
}

There are a couple things to notice in the above page_load event. First, if no user is logged in, the update button is disabled. This is because it would be meaningless to press the update button if there was no current user to update. It is important to mention that this article does not address dealing with anonymous users. That is a whole different topic. Very interesting, but beyond the scope of this article. Also notice that the first and last names are only loaded when the page is not a postback. That means that only the first time this page is loaded will the data will be loaded from the Profile datastore. After the first time, the data is stored in the page’s viewstate and no longer will have to be retrieved from the static Profile class. This is important to note because each time a profile property is accessed, a round trip to the membership database occurs. This is the reason using the Profile classes are often referred to as chatty with the database. Something to think about, and keep in mind when designing your application.

There are several good articles that go into more detail on using the profile provider. Scott Gu posts in his blog an excellent how to guide that steps you through creating basic Membership in a web application including customized Profile information. A good one in MSDN is Personalization and User Profiles in ASP.NET 2.0 by Dino Esposito. Another one of my favorites is Profiles in ASP.NET 2.0 by Scott Allen.

Why Do We Need This?

The questions comes up, why do we need an ObjectDataSource that encapsulates our Profile information? The answer is this. Even though ASP.NET does a wonderful job of giving us programmatic access to the Profile class it does not gives a simple way to view or update this data by binding it directly to any controls like gridview or detailsview. Joshua Flanagan wrote a very nice tool called ProfileView that you can see on his blog. Basically, he wrote an ASP.NET 2.0 server control that enables users to view and/or edit the Profile data. It does this using reflection at runtime to figure out what the profile information is, then it shows it.

The ObjectDataSource allows you at design time to make the presentation layer look exactly as you like. It also allows for viewing multiple members profiles at the same time. Take a look at the screen shot below to see what a gridview looks like using on ObjectDataSource generated using this technology. Also, you can play with it live right here.

At first glance, this is identical the screen developed in Part 2 of this series. If you look closer however (or at the picture to the right of the first one), you’ll notice that there are two new columns. First Name and Last Name. Both of these columns have data retrieved from the Membership Profile data provider we have been discussing. In the next section the details of what changes to the ObjectDataSource in the previous article have been made to allow this to happen. Something very important to note however, is that since the ObjectDataSource is basically a static class, the profile information in that ObjectDataSource will not automatically change when the web.config is changed (unlike Joshua Flanagan’s solution which will change).

Adding Profile Information to the ObjectDataSource

As was mentioned earlier, the ObjectDataSource developed here is 100% based on the one developed in Part II of this MSDN series, Implementation. The discussion here assumes all the previous code is understood and only explains the additions to support the Profile feature. All the code described here is what gets generated by the ObjectDataSource generator on Peter Kellner’s Blog (this tool is discussed in greater detail in the next major section of this article). In this section we go through the details of what gets added. In the next section it is shown how the steps to generating the source described here from an existing web.config file.

Changing Class Names

Since it’s possible the ObjectDataSource geneated here may be used in the same project as the one provided with Part 2 of this series, all the public names have been changed to avoid naming conflicts. For example, the class name MembershipUserODS has been renamed to MembershipUserAndProfileODS. The RoleData class has been renamed RoleDataForMP and the MemberhipUserWrapper class has been renamed MembershipUserWrapperForMP (MP standing for MembershipProfile).

The Insert Method

The method signature of Insert now contains all the names of the Profile properties. In addition to Membership.CreateUser being called, the Profile properties must be saves also with the Profile.Save() method. Below is the complete Insert method for an example set of profile properties (profile properties are stored in the web.config file and will likely be different for each asp.net web application).

[DataObjectMethod(DataObjectMethodType.Insert, true)]
public void Insert(string userName, bool isApproved,
    string comment, DateTime lastLockoutDate,
    DateTime creationDate,string email,
    DateTime lastActivityDate, string providerName,
    bool isLockedOut,DateTime lastLoginDate,
    bool isOnline, string passwordQuestion,
    DateTime lastPasswordChangedDate, string password,
    string passwordAnswer, string firstName,
    string lastName, bool advancedMode,
    string address_Street, string address_City,
    string address_State, string address_Zip
    )
{

    MembershipCreateStatus status;
    Membership.CreateUser(userName, password, email,
        passwordQuestion, passwordAnswer,
        isApproved, out status);

    if (status != MembershipCreateStatus.Success)
    {
     throw new ApplicationException(status.ToString());
    }

    MembershipUser mu = Membership.GetUser(userName);
    mu.Comment = comment;
    Membership.UpdateUser(mu);
    ProfileCommon pc =
     (ProfileCommon)ProfileBase.Create
        (mu.UserName, true);
    pc.FirstName = firstName;
    pc.LastName = lastName;
    pc.AdvancedMode = advancedMode;
    pc.Address.Street = address_Street;
    pc.Address.City = address_City;
    pc.Address.State = address_State;
    pc.Address.Zip = address_Zip;
    pc.Save();
}

Something also to take note of is the the variable names are constructed with an underscore because variable names with periods would not work. Notice in particular the properties that are nested such as address_state. This refers to the Profile property pc.Address.State.

The Delete Method

The delete method has no changes. This is because the membership class takes care of removing all profile information when Membership.DeleteUser() is invoked.

The Update Method

The Update method is changed. To the parameter list is added all the parameters representing properties. Then, in the update method itself the profile information is update after the Membership is updated. below is a portion of the code for this using the example properties.

ProfileCommon pc = (ProfileCommon)ProfileBase.
      Create(mu.UserName, true);
    pc.FirstName = firstName;
    pc.LastName = lastName;
    pc.AdvancedMode = advancedMode;
    pc.Address.Street = address_Street;
    pc.Address.City = address_City;
    pc.Address.State = address_State;
    pc.Address.Zip = address_Zip;
    pc.Save();

The Get (Select) Methods

Just like in Part 2 of this series, there are several Get Methods provided. No additional get methods are added, however now, because of the addition of the Profile properties, the Get Method’s return profile properties include Membership Properties as well as Profile properties. This is handled by first retrieving the Membership data with GetUser or GetUsers methods, then adding the additional properties from the profile to the Generic list which will get returned. The critical section of code that does this is next.

MembershipUserCollection muc = Membership.GetAllUsers();
foreach (MembershipUser mu in muc)
{
 if ((returnAllApprovedUsers==true &amp;&amp; mu.IsApproved==true) ||
 (returnAllNotApprovedUsers==true &amp;&amp; mu.IsApproved==false))
 {
    MembershipUserWrapperForMP md =
      new MembershipUserWrapperForMP(mu);
    ProfileCommon pc = (ProfileCommon)ProfileBase.Create
      (mu.UserName, true);
    md.FirstName = pc.FirstName;
    md.LastName = pc.LastName;
    md.AdvancedMode = pc.AdvancedMode;
    md.Address_Street = pc.Address.Street;
    md.Address_City = pc.Address.City;
    md.Address_State = pc.Address.State;
    md.Address_Zip = pc.Address.Zip;
    memberList.Add(md);
 }
}

Sorting Support

Sorting the ObjectDataSource’s columns is also supported. Just as in Membership Part 2, this is supported using anonymous delegates. Basically, a comparater method is created with an anonymous delegate that takes two parameters. The left and right hand side of a sort operation. Then, using this comparater, the generic List is sorted before being returned to the caller. This very clever construct was inspired by Ted Neward at a Code Camp in Portland.

Just like the MembershipUser properties, Profile properties are handled the same way so that those values can be sorted in a GridView by clicking on the column headers. Below is the creation of one comparater method.

switch (sortDataBase)
{
  case &quot;FirstName&quot;:
    comparison = new
      Comparison<membershipuserwrapperformp>(
       delegate(MembershipUserWrapperForMP lhs,
            MembershipUserWrapperForMP rhs)
       {
           return lhs.FirstName.CompareTo(
              rhs.FirstName);
       }
     );
    break;</membershipuserwrapperformp>

The Class associated with the Generic List

The final piece of code that has to be extended is the Class that is returned from the Get methods. That is the generic list which is declared as follows.

 protected void Page_Load(object sender, EventArgs e)
{
  // Only allow for profile update when a user is logged in
  MembershipUser mu = Membership.GetUser();
  if (mu == null)
  {
    ButtonUpdate.Enabled = false;
  }
  else
  {
    if (!IsPostBack)
    {
      TextBoxFirstName.Text = Profile.FirstName;
      TextBoxLastName.Text = Profile.LastName;
    }
  }
}

One Final Trick on Using the ObjectDataSource

ObjectDataSource’s are great for using with databound ASP.NET’s controls such as GridView and DetailsView. They are wired such that the get methods, update, delete and insert line up perfectly with what those controls are looking for. However, the ODS’s can be used directly without having a presentation style control associated with them. For example, the Insert method associated with adding a new member in the included code from the asp.net page MembershipWithProfile.aspx uses the ObjectDataSource to insert even though it is not bound to any control on the page. The data it is entering is coming from TextBox’s in a table. Below is the Insert code used. Notice how straight forward it is to use compared do creating an inserter and doing all the ADO without this class.

protected void ButtonNewUser_Click(object sender, EventArgs e)
{

    MembershipUtilities.MembershipUserAndProfileODS
      membershipUserAndProfileODS =
        new MembershipUserAndProfileODS();

    membershipUserAndProfileODS.Insert(
        TextBoxUserName.Text,
        CheckboxApproval.Checked,
        string.Empty,
        DateTime.Now,
        DateTime.Now,
        TextBoxEmail.Text,
        DateTime.Now,
        string.Empty,
        false,
        DateTime.Now,
        false,
        TextBoxPasswordQuestion.Text,
        DateTime.Now,
        TextBoxPassword.Text,
        TextBoxPasswordAnswer.Text,
        TextBoxFirstName.Text,
        TextBoxLastName.Text,
        false,
        string.Empty,
        string.Empty,
        string.Empty,
        string.Empty);

    GridViewMemberUser.DataBind();
    TextBoxUserName.Text = string.Empty;
    TextBoxFirstName.Text = string.Empty;
    TextBoxLastName.Text = string.Empty;
    TextBoxPassword.Text = string.Empty;
    TextBoxEmail.Text = string.Empty;
    TextBoxPasswordAnswer.Text = string.Empty;
    TextBoxPasswordQuestion.Text = string.Empty;
    CheckboxApproval.Checked = false;
}

Because this is an actual class with properties, using the ObjectDataSource class is type safe. For example, in the code below, the user may want to count how many zipcodes in the membership database that begin with 9. Here is the code to do it. Notice how Address_Zip is used in a type safe way.

protected void ButtonZipCount_Click
    (object sender, EventArgs e)
{
    MembershipUtilities.MembershipUserAndProfileODS
        membershipUserAndProfileODS =
        new MembershipUserAndProfileODS();

    List<membershipuserwrapperformp> li =
        membershipUserAndProfileODS.GetMembers
        (string.Empty);

    int count = 0;
    foreach (MembershipUserWrapperForMP mu in li)
    {
        if (mu.Address_Zip.StartsWith(&quot;9&quot;))
        {
            count++;
        }
    }
}</membershipuserwrapperformp>

Using the Profile Generating Website

All the changes listed in the previous section could be done by hand, however this would be very tedious. To make this process much easier, a code generator has been developed which takes as input the applications web.config file’s <System.Web> section. The idea is to cut this out of the web.config file and paste it into the web page which will generate the code for you. Below is a screen show of what the web page looks like. When you get to this page, you must first click on the button in the right column labeled "Click Here to Begin".

Here is the URL: http://painfreeods.peterkellner.net/

 

The XML which is pasted into the multi line orange textbox is as follows (you should paste your own in here).

<system  .web>
  <profile defaultprovider="SqlProfileProvider">
    <providers>
      <remove name="AspNetSqlProfileProvider" />
      <add name="SqlProfileProvider" connectionstringname="LocalSqlServer" type="System.Web.Profile.SqlProfileProvider" />
    </providers>
    <properties>
      <add name="FirstName" type="string" />
      <add name="LastName" type="string" />
      <add name="AdvancedMode" type="bool" />
      <group name="Address">
        <add name="Street" type="string" />
        <add name="City" type="string" />
        <add name="State" type="string" />
        <add name="Zip" type="string" />
      </group>    </properties>  </profile>
</system>

Now, if the "Show Generated C#" button is pressed, the complete ObjectDataSource will be created. This code can then be cut and pasted into the App_Code directory of the web project. Here is what the screen looks like.

There are some limitations to this code generation technology. First is that there can only be one level of nesting. That is, there can be no groups of groups. Just one level of grouping is allowed as is shown here. It is OK to have multiple groups, just not nested. Another limitation is the type associated with the name must be a C# type. That is, string, bool,DateTime,etc. The final limitation (known about) is that it can not handle Array or Collection type properties. All properties must be single valued.

At this point, error checking is minimal so if the limitations are exceeded, something will likely come out but it may not be what was desired.

Build A Simple Web Page

Now that the C# class has been generated, the next steps are very straight forward. For those who have not built a GridView based on an ObjectDataSource, here is a pictorial step by step of the 9 things needed to do to have a very simple gridview control in under 5 minutes.

Building a Web Page From Scratch

1. Add a New Web Page to the Project

2. Choose Web Page and Name it

3. Add a GridView and an ObjectDataSource. Associate them

4. Configure the ObjectDataSource by Assigning the Class

 

5. Choose the Get Method (Use Default)

 

6. Choose the Update Method (Use Default)

7. Choose the Insert Method (Choose Default)

8. Choose the Delete Method (Choose Default)

9. Run it! (OK, had to enable edit and delete on Gridview. No more boxes left)

  

The code in the associated source to this article has a web apge ( MembershipWithProfile.aspx) which is very similar to what is done here.

Conclusions

Profiles are a very powerful way to store information about Membership. It’s powerful in that with very little coding, lots of additional information about logged in users is available. With this tool, there is now a better way to organize this information and maintain it. Briefly mentioned earlier were the performance implications of using Profile information. It is important to understand what his happening under the covers when this technology is used. As long there is an understanding of what is happening and it is acceptable in the web application being developed, this is a wonderful technology.

Finally, as a plug to the technology that was used in this free ObjectDataSource creator, the Pain Free ObjectDataSource Creator, available through subscription on this blog, lets the developer generate very flexible ObjectDataSource’s to access database information in SqlServer, MySql and Oracle. Unlike the Profile ODS generator in this article, the ODS generator for databases gives you a large amount of flexibility. An infinite number of getter methods, updaters and inserters can be defined. It works with views, and also stored procedures. Any questions on the Pain Free ODS Generator, click here.

Thanks for reading, and best of luck with your coding projects.

]]> http://peterkellner.net/2006/03/13/adding-personalization-via-profiles-to-the-objectdatasource-in-aspnet-20/feed/ 22 Membership Management Newly Styled GridView http://peterkellner.net/2006/01/27/membership-management-newly-styled-gridview/?utm_source=rss&utm_medium=rss&utm_campaign=membership-management-newly-styled-gridview http://peterkellner.net/2006/01/27/membership-management-newly-styled-gridview/#comments Fri, 27 Jan 2006 17:46:09 +0000 Peter Kellner http://peterkellner.net/?p=27

Mikhail Lukyanau has been kind enough to provide a redesigned version of the membership.aspx page. The source file for this can be downloaded at (Download New File). Below is a screen shot of this new look.

Figure 1 – Updated Design for Membership.aspx By Mikhail Lukyanau

 

]]> http://peterkellner.net/2006/01/27/membership-management-newly-styled-gridview/feed/ 18 Using Membeship ObjectDataSource For Returning ProviderUserKey (ForeignKey Use) http://peterkellner.net/2006/01/10/using-membeship-objectdatasource-for-returning-provideruserkey/?utm_source=rss&utm_medium=rss&utm_campaign=using-membeship-objectdatasource-for-returning-provideruserkey http://peterkellner.net/2006/01/10/using-membeship-objectdatasource-for-returning-provideruserkey/#comments Tue, 10 Jan 2006 16:54:53 +0000 Peter Kellner http://peterkellner.net/archives/2006/01/10/26/ This article gives an example of how to modify the Object DataSource in the previous article (Microsoft ASP.NET 2.0 Member/Role Management with IIS
Part 1: Security and Configuration Overview ) to return a ProviderUserKey which can then be used as a foreign key into the developer's own data tables.

]]> I was recently asked how to use the Membership Data Object to return the unique ProviderKey generated by the Membership object. This may be necessary if want to associate the membership data with an existing table. That is, add a foreign key "ProviderUserKey" to another table so you can track an existing user to your current database without getting involved in extending the base provider. You can of course extend the existing provider to include other fields, but in general, you probably are better off maintaining your own tables rather than extending the provider model. Peter Dawson does an excellent job of explaining and showing how to extend the Membership Provider in his article Creating a Custom ASP.NET Provider. (published on theserverside.net)

So, back to what needs to be done to use my Membership ObjectDataClass (Part 2: Implementation" href="http://peterkellner.net/archives/2006/01/09/24/" rel=bookmark>Microsoft ASP.NET 2.0 Member/Role Management with IIS

Part 2: Implementation

). First thing is you need to add another insert method to the class. This method takes just a few parameters and returns as out parameters both the status of the insert as well as the providerUserKey as a string.

[DataObjectMethod(DataObjectMethodType.Insert, false)]
static public void Insert(string userName,
    bool isApproved,
    string email,
    string passwordQuestion,
    string password,
    string passwordAnswer,
    out MembershipCreateStatus membershipCreateStatus,
    out string providerIdKeyString)
{
    MembershipUser muNew = Membership.CreateUser(userName,
        password, email, passwordQuestion, passwordAnswer,
        isApproved,out membershipCreateStatus);
    if (membershipCreateStatus ==
        MembershipCreateStatus.Success)
    {
        providerIdKeyString = muNew.ProviderUserKey.ToString();
    }
    else
    {
        providerIdKeyString = string.Empty;  // failed
    }
    return;
}

Figure 1 – The New Insert Method to be added to MembershipUserODS.cs

If you want to turn the Guid passed back into a native Guid type do the following. (this could be useful if you want to retrieve the current username as shown below.

Guid myNewGuild = new Guid(providerIdKeyString);
MembershipUser myCurrentMembershipUser = Membership.GetUser(myNewGuild);
string memberName = myCurrentMembershipUser.UserName;

Figure 2 – Example of converting created ProviderUseKey to Guid and retreiving username

Now that we have the new Insert Method defined the easiest thing to do is use it directly. Below is a complete aspx page that references the new method as well as a screen shot of what it looks like to add a new member. Notice that the status label is returning the providerUserKey.

Figure 3 – Examples of adding a new user with a valid password, and one without a valid password

< %@ Page Language="C#" %>
< !DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<script runat="server">

    protected void ButtonNewUser_Click(object sender, EventArgs e)
    {
        MembershipCreateStatus membershipCreateStatus;
        string providerIdKeyString = string.Empty;
        MembershipUtilities.MembershipUserODS.Insert(TextBoxUserName.Text,
            CheckboxApproval.Checked,
            TextBoxEmail.Text,
            TextBoxPasswordQuestion.Text,
            TextBoxPassword.Text,
            TextBoxPasswordAnswer.Text,
            out membershipCreateStatus,
            out providerIdKeyString
        );
        if (membershipCreateStatus == MembershipCreateStatus.Success)
        {
            LabelInsertMessage.Text = "New User Create Successfully.  Key: " + providerIdKeyString;
        }
        else
        {
            LabelInsertMessage.Text = membershipCreateStatus.ToString();
        }

        return;
    }
</script>

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title>Untitled Page</title>
</head>
<body>
    <form id="form1" runat="server">
        <div>
            <asp  :P  anel ID="PanelCreateUser" runat="server" BorderColor="Black" BorderWidth="1px"
                Height="50px" Width="125px">
                <table cellpadding="3" cellspacing="3">
                    <tr>
                        <td style="height: 32px">
                            <asp :Label ID="Label3" runat="server" Text="UserName"></asp>
                        </td>
                        <td style="height: 32px">
                            <asp :TextBox ID="TextBoxUserName" runat="server"></asp>
                        </td>
                        <td style="height: 32px">
                            <asp :Label ID="Label4" runat="server" Text="Password"></asp>
                        </td>
                        <td style="height: 32px">
                            <asp :TextBox ID="TextBoxPassword" runat="server"></asp>
                        </td>
                    </tr>
                    <tr>
                        <td>
                            <asp :Label ID="Label5" runat="server" Text="PasswordQuestion"></asp>
                        </td>
                        <td>
                            <asp :TextBox ID="TextBoxPasswordQuestion" runat="server"></asp>
                        </td>
                        <td>
                            <asp :Label ID="Label6" runat="server" Text="PasswordAnswer"></asp>
                        </td>
                        <td>
                            <asp :TextBox ID="TextBoxPasswordAnswer" runat="server"></asp>
                        </td>
                    </tr>
                    <tr>
                        <td>
                            <asp :Label ID="Label2" runat="server" Text="Email"></asp>
                        </td>
                        <td>
                            <asp :TextBox ID="TextBoxEmail" runat="server"></asp>
                        </td>
                        <td>
                            <asp :Label ID="Label9" runat="server" Text="Approved"></asp>
                        </td>
                        <td>
                            <asp :CheckBox ID="CheckboxApproval" runat="server" />
                        </td>
                    </tr>
                    <tr>
                        <td>
                            <asp :Button ID="ButtonNewUser" runat="server" OnClick="ButtonNewUser_Click" Text="Create New User" />
                        </td>
                    </tr>
                </table>
                </asp><asp :Label ID="LabelInsertMessage" runat="server"></asp>
        </div>
    </form>
</body>
</html>

Figure 4 – complete aspx page excercising new insert method

]]> http://peterkellner.net/2006/01/10/using-membeship-objectdatasource-for-returning-provideruserkey/feed/ 7