Using Asynchronous function calls

Asynchronous.cs

//Asynchronous
//---------------

public string MainFunction(Context aCtx)
{           
	CallProcessingMethod(aCtx);        
}


public delegate string DelegateProcessing(Context aCtx);

private void CallProcessingMethod(Context aCtx)
{
     // create the delegate
     DelegateProcessing delProcessing = new DelegateProcessing(ProcessingMethod);
     delProcessing.BeginInvoke(aCtx, new AsyncCallback(CallBackProcessing), null);
}

private void CallBackProcessing(IAsyncResult ar)
{         
    // first case IAsyncResult to an AsyncResult object, so we can get the
    // delegate that was used to call the function.
    AsyncResult asyncResult = (AsyncResult)ar;

    // grab the delegate
    DelegateProcessing del = (DelegateProcessing)asyncResult.AsyncDelegate;

    // now that we have the delegate,
    // we must call EndInvoke on it, so we can get all
    // the information about our method call.
    try
    {
         del.EndInvoke(ar);
    }
    catch { }
}

private string ProcessingMethod(Context aCtx)
{
     return "";
}