I have a Sender class that sends a Message on a IChannel:

public class MessageEventArgs : EventArgs {
  public Message Message { get; private set; }
  public MessageEventArgs(Message m) { Message = m; }
}

public interface IChannel {
  public event EventHandler<MessageEventArgs> MessageReceived;
  void Send(Message m);
}

public class Sender {
  public const int MaxWaitInMs = 5000;
  private IChannel _c = ...;

  public Message Send(Message m) {
    _c.Send(m);
    // wait for MaxWaitInMs to get an event from _c.MessageReceived
    // return the message or null if no message was received in response
  }
}

When we send messages, the IChannel sometimes gives a response depending on what kind of Message was sent by raising the MessageReceived event. The event arguments contain the message of interest.

I want Sender.Send() method to wait for a short time to see if this event is raised. If so, I'll return its MessageEventArgs.Message property. If not, I return a null Message.

How can I wait in this way? I'd prefer not to have do the threading legwork with ManualResetEvents and such, so sticking to regular events would be optimal for me.