So, this is kind of embarrassing, that it took me a while to figure this out. I have not been doing pure asp.net server control programming for a while, but I figure since it took me a while, maybe there is someone else in the same boat.
So, you have a GridView or DetailsView that has standard “Edit” “Update” “New” type command buttons on them. The way they get there is by having the declaration something like this:
(more…)So, you want to access some content from inside a page that you created from an existing master page? The most clean way to do this is to create a public property in your master page, then access that. In my case, I have a search button on a master page that I want to use from inside to pages that derive from that page. So, Here is how I declare my master page:
1: <%@ Master Language="C#" MasterPageFile="~/MasterPages/MasterPage.Master" AutoEventWireup="true"
2: CodeBehind="ContactMasterPage.master.cs" Inherits="ThreePLogic.Web.ASPWeb.ContactPages.ContactMasterPage" %>
3:
4: <asp:Content ID="Content5" ContentPlaceHolderID="ContentCenter" runat="server">
5: <asp:TextBox ID="TextBoxSearchName" runat="server" Width="200px" CssClass="InputText"></asp:TextBox>
6: <asp:Button ID="ButtonSearchName" runat="server" CssClass="SearchBtn" />
7: </div>
8: </div>
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).
(more…)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.
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:
Hope this helps!
