WCF Error - Could not find default endpoint element that references contract 'UserService.UserService'

Solution 1:

I had a run in with the same problem. My application was also a Silverlight application and the service was being called from a class library with a custom UserControl that was being used in it.

The solution is simple. Copy the endpoint definitions from the config file (e.g. ServiceReferences.ClientConfig) of the class library to the config file of the silverlight application. I know you'd expect it to work without having to do this, but apparently someone in Redmond had a vacation that day.

Solution 2:

You can also set these values programatically in the class library, this will avoid unnecessary movement of the config files across the library. The example code for simple BasciHttpBinding is -

BasicHttpBinding basicHttpbinding = new BasicHttpBinding(BasicHttpSecurityMode.None);
basicHttpbinding.Name = "BasicHttpBinding_YourName";
basicHttpbinding.Security.Transport.ClientCredentialType = HttpClientCredentialType.None;
basicHttpbinding.Security.Message.ClientCredentialType = BasicHttpMessageCredentialType.UserName;

EndpointAddress endpointAddress = new EndpointAddress("http://<Your machine>/Service1/Service1.svc");
Service1Client proxyClient = new Service1Client(basicHttpbinding,endpointAddress);