Client
iGame Channel = new ChannelFactory<iGame> ( new BasicHttpBinding ( BasicHttpSecurityMode . None ) , new EndpointAddress ( new Uri ( "http://localhost:58597/Game.svc" ) ) ) . CreateChannel ( );
public Task<SerializableDynamicObject> Client ( SerializableDynamicObject Packet )
{
return Task<SerializableDynamicObject> . Factory . FromAsync ( Channel . BeginConnection , Channel . EndConnection , Packet , null );
}
Contract
[OperationContract ( AsyncPattern = true )]
IAsyncResult BeginConnection ( SerializableDynamicObject Message , AsyncCallback Callback , object State );
SerializableDynamicObject EndConnection ( IAsyncResult Result );
Service
public IAsyncResult BeginConnection ( SerializableDynamicObject Message , AsyncCallback Callback , object State )
{
dynamic Request = Message;
dynamic Response = new SerializableDynamicObject ( );
if ( Request . Operation = "test" )
{
Response . Status = true;
}
Response . Status = false;
return new CompletedAsyncResult<SerializableDynamicObject> ( Response );
}
public SerializableDynamicObject EndConnection ( IAsyncResult Result )
{
return ( Result as CompletedAsyncResult<SerializableDynamicObject> ) . Data;
}
Exposing Service from Silverlight Client
private async void myButton ( object sender , RoutedEventArgs e )
{
dynamic Request = new SerializableDynamicObject ( );
Request . Operation = "test";
var task = Client ( Request );
var result = await task; // <------------------------------ Exception
}
Exception
Task<SerializableDynamicObject > does not contain a definition for 'GetAwaiter'
What's wrong ?
Edit 1 :
Briefly,
Visual studio 2012 RC Silverlight 5 Application consumes Game WCF 4 Service hosted in ASP.net 4 Application with ChannelFactory technique via Shared Portable Library .NET4/SL5 contains the iGame interface with Async CTP
Graph :
ASP.NET <= Class Library ( Game ) <= Portable Library ( iGame ) => Silverlight
Edit 2 :
I had this issue in one of my projects, where I found that I had set my project's .Net Framework version to 4.0 and async tasks are only supported in .Net Framework 4.5 onwards.
I simply changed my project settings to use .Net Framework 4.5 or above and it worked.