Programmatic configuration of [Silverlight] WCF Client - wcf

Question

We're developing a Silverlight Client onto a server-based API exposed via WCF.
I'm trying to move my WCF client code (which works fine) from a configuration-based model to a programmatic model. This will enable me to have a single "root" URL which I can apply at start-up and not require installations to have to maintain humongous configuration files.
I'm stuggling converting my configurations to Silverlight-capable code, though.
Where I have the configuration below for one of my services:
<configuration>
<system.serviceModel>
<bindings>
<customBinding>
<binding name="CustomBinding_ISilverlightHelper">
<binaryMessageEncoding />
<httpTransport maxReceivedMessageSize="2147483647" maxBufferSize="2147483647">
<extendedProtectionPolicy policyEnforcement="Never" />
</httpTransport>
</binding>
</customBinding>
</bindings>
<client>
<endpoint address="http://localhost:50072/API/WCF/Silverlight/SilverlightHelper.svc"
binding="customBinding" bindingConfiguration="CustomBinding_ISilverlightHelper"
contract="API.WCF.Silverlight.ISilverlightHelper" name="CustomBinding_ISilverlightHelper" />
</client>
</system.serviceModel>
</configuration>
I can't figure out how to create the equivelant client-config code. At the moment I have:
CustomBinding customBinding = new CustomBinding();
// I see I need to do something with customBinding but the properties don't seem
// logical
// I have used BasicHttpBinding, but it just returns with "Not Found" (the service does resolve to a valid URL)
BasicHttpBinding basicHttpBinding = new BasicHttpBinding() { MaxBufferSize = int.MaxValue, MaxReceivedMessageSize = int.MaxValue };
EndpointAddress endpointAddress = new EndpointAddress("http://localhost:50072/API/WCF/Silverlight/SilverlightHelper.svc");
ISilverlightHelper silverlightHelper= new ChannelFactory<ISilverlightHelper>(basicHttpBinding, endpointAddress).CreateChannel();
AsyncCallback asyncCallback = delegate(IAsyncResult result)
{
ISilverlightHelper asyncSilverlightHelper = (ISilverlightHelper)result.AsyncState;
string[] files=asyncSilverlightHelper.EndGetPlugInXapNames(result).ToArray();
};
silverlightHelper.BeginGetPlugInXapNames(asyncCallback, silverlightHelper);
Any clues would be appreciated. I've spent all morning Googling/Binging/Overflowing but haven't come across this scenario. Or I might be just so far wrong ...

Answer 1

Sorted it.
I created the BinaryMessageEncodingBindingElement and HttpTransportBindingElements, added them to the CustomBinding and it all works.
Here's my annotated code:
// create the binding elements
BinaryMessageEncodingBindingElement binaryMessageEncoding = new BinaryMessageEncodingBindingElement();
HttpTransportBindingElement httpTransport = new HttpTransportBindingElement() { MaxBufferSize = int.MaxValue, MaxReceivedMessageSize = int.MaxValue };
// add the binding elements into a Custom Binding
CustomBinding customBinding = new CustomBinding(binaryMessageEncoding,httpTransport);
// create the Endpoint URL (I'll use a configured URL later - all web services will then move as one)
EndpointAddress endpointAddress = new EndpointAddress("http://localhost:50072/API/WCF/Silverlight/SilverlightHelper.svc");
// create an interface for the WCF service
ISilverlightHelper silverlightHelper= new ChannelFactory<ISilverlightHelper>(customBinding, endpointAddress).CreateChannel();
// set-up the asynchronous callback
AsyncCallback asyncCallback = delegate(IAsyncResult result)
{
ISilverlightHelper asyncSilverlightHelper = (ISilverlightHelper)result.AsyncState;
string[] files=asyncSilverlightHelper.EndGetPlugInXapNames(result).ToArray();
};
// execute the call
silverlightHelper.BeginGetPlugInXapNames(asyncCallback, silverlightHelper);