Calling a WCF service from your Silverlight application

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Presentations given in Irvine and Riverside, CA - here's the deck and links for more information about

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Tue, 04 Dec 2007 00:33:53 GMT

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re: Calling a WCF service from your Silverlight application

Reece Sim — Fri, 23 Nov 2007 01:55:47 GMT

Hi,

I am trying to use a duplex service in Silverlight. Is that possible? If it is may I know how?

Working with WCF for your Silverlight 1.1 Applications

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While you can easily use XML web services in your Silverlight applications, working with WCF is much

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While you can easily use XML web services in your Silverlight applications, working with WCF is much

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Silverlight and JSON « Tales from a Trading Desk

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re: Calling a WCF service from your Silverlight application

sacha barber — Thu, 18 Oct 2007 07:33:40 GMT

any chance of working source code. COuld you send it to me at sachabarber@hotmail.com

re: Calling a WCF service from your Silverlight application

Walter — Fri, 27 Jul 2007 07:59:28 GMT

Hi, Can you upload your sample code here?

re: Calling a WCF service from your Silverlight application

Swati — Mon, 23 Jul 2007 13:08:18 GMT

Thanks for this useful information:

Actually i am trying to call a WCF Service from a SilverLight application. Silverlight provides add webreference but i cann't get the object of reference and hence can not call the WCF service..

Would you please highlight more upon your writeup.

re: Calling a WCF service from your Silverlight application

luisabreu — Thu, 05 Jul 2007 20:16:11 GMT

hello.

send me a running sample to labreu at gmail.com and i'll try to take a look at it

re: Calling a WCF service from your Silverlight application

W James — Thu, 05 Jul 2007 13:53:24 GMT

Thanks for your work. I've tried to duplicate a WCP service call at my end. Unfortunately, I get an "Operation is not valid due to the current state of the object." error. Forgive me for being a WCF newb. I'm hoping that you can provide an answer to my dilema. Here are some code snippets:

<Web.config>

<system.serviceModel>

<endpoint contract="ITestService"

binding="webHttpBinding" address=""

behaviorConfiguration="jsonBehavior" bindingConfiguration="jsonBinding" />

</service>

</services>

</webHttpBinding>

</bindings>

</behavior>

</serviceBehaviors>

</behavior>

</endpointBehaviors>

</behaviors>

</system.serviceModel>

<TestService.svc>

<%@ ServiceHost Language="C#" Debug="true" Service="TestService" CodeBehind="~/App_Code/TestService.cs" %>

<app_code/ITestService.cs>

[ServiceContract]

public interface ITestService

{

[OperationContract]

string GetDataRows(string serviceName);

[OperationContract]

string HelloWorld();

}

<app_code/TestService.cs>

public class TestService : ITestService

{

public string GetDataRows(string serviceName)

{

return "Dummy result";

}

public string HelloWorld()

{

return "Hi world!";

}

<Default.xaml.cs>

public class Proxy : SoapHttpClientProtocol

{

public Proxy(string url)

{

this.Url = url;

}

public string GetDataRows(string serviceName)

{

try

{

ServiceParameter[] parameters = new ServiceParameter[]

{

new ServiceParameter("serviceName", serviceName)

};

object[] obj = this.Invoke("GetDataRows", parameters, typeof(string));

return (string)obj[0];

}

catch (System.Exception error)

{

return error.Message;

}

public string HelloWorld()

{

try

{

object[] obj = this.Invoke("HelloWorld", new ServiceParameter[0], typeof(string));

return (string)obj[0];

}

catch (System.Exception error)

{

return error.Message;

}

...

Proxy proxy = new Proxy("localhost/.../TestService.svc");

proxy.HelloWorld();

I'm sorry about posting all this code to your forum. I'm stumped and didn't know where else to turn. It's probably not the best way to introduce myself.

I've followed your code examples as closely as possible. I've tried the proxy url without the ".svc" extension as well and come up with the same issue.

Any help you can lend is greatly appreciated.

W James