If you are using XNA Game Studio 4.0 to create an application targeted to Windows Phone 7, you may have tried to add a service reference to a WCF service inside visual studio and been stuck…

This appears to be a known issue – there is an easy workaround doing this manually with the Silverlight version of the SvcUtil application.

1. Launch a command prompt
2. Navigate to: C:\Program Files (x86)\Microsoft SDKs\Windows Phone\v7.0\Tools
3. Run SLSvcUtil /d:<output directory> <path to wsdl>
4. Add the two created files (*.cs, and ServiceReferences.ClientConfig) to your existing XNA Project
5. Select ServiceReferences.ClientConfig if the Solution explorer and change “Build Action” to “Content”

Here is an example of using the command:

C:\Program Files (x86)\Microsoft SDKs\Windows Phone\v7.0\Tools>slsvcutil /d:c:\mycode  http://test.com/test.svc?wsdl

Be sure to leverage the MSDN article for more information:

http://msdn.microsoft.com/en-us/library/cc197958%28v=vs.95%29.aspx