Comments on: Integrating Web Services and Silverlight with .Net 1.1 Alpha

By: Mutyalanna Roddam

Mutyalanna Roddam — Fri, 14 May 2010 07:50:53 +0000

HI,

Currently we are working for XYZ project and have many components wich are TIM,TAM,TDI,WAS,SQL amd \
Issue:EndUsers are not getting the Usermails after clicking on the continue button in my application.

Actually we have two Webservice in which one webservice is down then
one was working fine henceforth some of the users are not getting the mails.

I have verify the logs which saying that below:

Error : A remote host refused an attempted connect operation.

We are receiving the same error when called from the SoapUI:

100
java.lang.Exception: Error: A remote host refused an attempted connect operation. Error

Can you please help us in resolving these.

By: Karl

Karl — Sat, 17 Oct 2009 15:03:19 +0000

I think you post some prime points in this post :p

By: balaji

balaji — Thu, 09 Jul 2009 06:24:20 +0000

Hey there,
I cant find any Menu called add silverlight application Link.
Mine is vs 2008, with vista os .
Wuld that be a problem for that.
All thet i need is to access the webservices method from page.xaml.
But am getting cross domain error if i try to use async method
Plz help
Thanks in advance
Regards
N.Balaji

By: Peter Kellner

Peter Kellner — Fri, 11 Apr 2008 03:43:16 +0000

Tim Heuer has a great article on doing webservices that is much newer than mine here. Give it a read! Tim’s a great resource and is now on the silverlight team.

http://timheuer.com/blog/archive/2008/04/09/silverlight-cannot-access-web-service.aspx

By: Hammad

Hammad — Thu, 14 Feb 2008 10:51:57 +0000

Hi Peter,

I have a silverlight application that communicates to Webservices

It is running fine at my localhost but when i deploy it to my hosting server i get cross domain error

I am not using AspXaml control due to “Click to activate this Control” but using .html file to createsilverlight .html file and .asmx files are in the same directory so why i am getting this error?

may be the hosting server is running .asmx files at some other port than 80?

but i tried http:// …. /mywebservice.asmx (without specifying any port) i ran and shows the wsdl

-
Please help

By: Nir

Nir — Wed, 13 Feb 2008 17:23:52 +0000

Hi,
Maybe you can assist:
I’m having IIS website project with webservice and silverlight project.
The web service is using httpwebrequest\reponse and not JSON.

When running from the same machine where the development is (and the IIS), it runs ok.
When running from other machine the response fails to parse the XML returned, although it is the same action.
Can you explain?
Is there a way to debug the client machine process?
Thanks,

By: Christian Franzen

Christian Franzen — Wed, 16 Jan 2008 12:12:13 +0000

Hi There.

I tried following this guide, but ran into the following error:

System.InvalidOperationException: Operation is not valid due to the current state of the object.

I noticed on http://silverlight.net/forums/t/732.aspx that you experienced the same problem. So I was hoping you know exactly what I’m doing wrong. Any help would be greatly appriciated.

By: Geoff

Geoff — Sun, 23 Dec 2007 16:18:28 +0000

*Sigh*

I wish you had posted the code.

Either I can run the project, and debug, but the WS doesn’t work. Or, I can browse to the testpage.html and the WS works, but I can’t debug.

By: Jules

Jules — Sun, 09 Dec 2007 19:43:46 +0000

Good Article.
What wort of Web Service did you call against ? – Was it ASMX based or JSON or POX ?
Because I am still having a problem using this process against an ASMX based .NET web service, linked into Silverlight Project. I get an JSON_IllegalPrimative ? exception in my Silverlight call, which is rather strange.
Using VS2008 RTM, Silverlight 1.1 Alpha on Windows XP.
Cheers Anyway

By: Michael Kariv

Michael Kariv — Wed, 24 Oct 2007 06:51:18 +0000

Great article. All works as advertised.
My tip to the readers is that if you change your web service interface you have to re-generate WebService.cs.

Then all nice commented out alternatives to URL will be lost. Copying them every time is tedious.
I find mysleft switching between production (discountasp.net has 3.5 beta hosting) and debug environments.

My solution is to derive from WebService and keep all those comments in constructor of the subclass.

Another tip – have a batch file (or WSH script) to regenerate the file. I have. It generates and copies the file to the right place.

If anyone is interested i can post it.

By: alex

alex — Fri, 19 Oct 2007 05:10:41 +0000

sir i need to develop an application which gets the table from sql server and display in silverlight in form of chart.plz send me code for that if possible else required steps..
thnx

By: romain

romain — Sat, 13 Oct 2007 20:08:44 +0000

Hi Peter,

There is another problem. When I try more complex thing as get objects from the WS I can’t enter the method I called in debug mode and I don’t get this object. Is it because Silverlight 1.1 alfa doesn’t include XML.Serialization, so we can’t use soap?

PS: Can you send me a mail ?

Regards.

By: romain

romain — Sat, 13 Oct 2007 16:49:05 +0000

Hi Peter.

I followed your example and no problem it works.You launch your project via your WS. In fact, when I start with my Silverlight project it doesn’t work anymore (“Hello Wolrd” is not printed). Do you have a solution ?

Regards.

By: puromtec

puromtec — Fri, 05 Oct 2007 03:09:39 +0000

I have followed your instructions, minus generating the web.config from vs 2005 /w ajax. Instead, I have installed the ajax from http://asp.net/ajax/ on a fresh machine that has only the requirements specified on silverlight getting started.

I have added this to the web.config, to allow for [System.Web.Script.Services.ScriptService] attribute above the webservice class.

(GT)compilation debug=”true”(LT)
(GT)assemblies(LT)
(GT)add assembly=”System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35″/(LT)
(GT)/assemblies(LT)
(GT)/compilation(LT)

When I try to execute any web methods from the silverlight’s xaml.cs, using async call, the IAsyncResult results in a ‘iar.AsyncWaitHandle’ threw an exception of type ‘System.NotImplementedException’.

I am definitely using the WebService proxy code, as the debugger tracks into the WebService.cs in the silverlight project that inherits from System.Windows.Browser.Net.SoapHttpClientProtocol.

Any ideas would be appreciated.

Thanks

By: puromtec

puromtec — Fri, 05 Oct 2007 03:07:17 +0000

I have added this to the web.config, to allow for [System.Web.Script.Services.ScriptService] attribute above the webservice class.

I am definitely using the WebService proxy code, as the debugger tracks into the WebService.cs in the silverlight project that inherits from System.Windows.Browser.Net.SoapHttpClientProtocol.

Any ideas would be appreciated.

Thanks

By: Administrator

Administrator — Fri, 07 Sep 2007 14:00:56 +0000

Willeus,
What I would do if I did not have control of the web service is to make your own web service that essentially relays the information from the one yo want to your local one which you can call.
-Peter Kellner

By: Willeus

Willeus — Fri, 07 Sep 2007 10:07:30 +0000

This is good if you have control of the webservice. What should we do if the web-service is an external web service that is on a separate domain?

By: Eric

Eric — Thu, 30 Aug 2007 18:27:34 +0000

I had this problem when my webservice was in its own project. But when I placed the web service within the Web Site that was hosting the XAML and uncommented the folling line-

[System.Web.Script.Services.ScriptService]

Above the WebService class it all

By: Bill

Bill — Tue, 28 Aug 2007 18:21:09 +0000

Thank you Peter! You kept my computer from going out the window!!!

I had downgraded the webservice to .NET 2.0 also. I used your trick of generating an ajax web project in VS 2005 and copying the web.config to my new webservice. Worked like a charm!

Thanks again!

Bill

By: John

John — Thu, 26 Jul 2007 10:27:39 +0000

Thank you very much! This tutorial was very, very helpfull!