public void MsEventArgRaiser(int x)
 {
     if (x > 100)
     {
         var eventArgs = new CustomEventArg("More than 100");
         MyEventHandler(this, eventArgs);
     }
 }
 public void HandleMsEventArgs(object sender, CustomEventArg args)
 {
     Console.WriteLine(args.Message + " says it is more that 100");
 }