Async WCF Service

1. Service Contracts

[ServiceContract]


public interface ITestService
{

[OperationContract(AsyncPattern = true)]

IAsyncResult BeginCallTestProcedure(int i,AsyncCallback cb, Object state);

int EndCallTestProcedure(IAsyncResult result);

}
 
2. Service Implementation:
 
public class TestService:ITestService


{

public IAsyncResult BeginCallTestProcedure(int i, AsyncCallback asyncCallback, object state)

{

Func invokeOperation=(x) => new ProcedureWorker().CallTestProcedure(x);

return invokeOperation.BeginInvoke(i, asyncCallback, state);

}



public int EndCallTestProcedure(IAsyncResult iAsyncResult)

{

var asynResult = (System.Runtime.Remoting.Messaging.AsyncResult)iAsyncResult;

var func = (Func)asynResult.AsyncDelegate;

return func.EndInvoke(iAsyncResult);

}

}
 
public class ProcedureWorker


{

public int CallTestProcedure(int i)

{

// TSSObject.GetInstance().CallProcTest(i);

for (int j = 0; j < 3; j++)

{

Console.WriteLine(j);

Thread.Sleep(1000);

}

return i+1;

}

}
 
3. Client Side Invoke:
 
var wcfClient=....
 
var result= wcfClient.BeginCallTestProcedure(3,null,null);


Console.WriteLine(wcfClient.EndCallTestProcedure(result));