Initiates an asynchronous echo operation.
Initiates an asynchronous echo operation.
public IAsyncResult BeginEcho(EchoMessage);
Initiates an asynchronous echo operation that has a specified state object.
public IAsyncResult BeginEcho(EchoMessage,object);
Initiates an asynchronous echo operation that has a specified state object. This overload receives notification, through a callback, of the identity of the event handler for this operation.
public IAsyncResult BeginEcho(EchoMessage,object,AsyncCallback);