/// <summary>
 /// 根据指定的接收者和 <c>Intent</c> 对象传递并执行任务
 /// </summary>
 /// <param name="receiver"></param>
 /// <param name="intent"></param>
 private void Execute(string receiver, Intent intent)
 {
     if (Colleagues.ContainsKey(receiver))
     {
         IWorker worker = Colleagues[receiver] as IWorker;
         if (worker != null)
         {
             worker.Trigger(intent);
         }
     }
 }
 /// <summary>
 /// 中介者必须具备在同事之间处理逻辑、分配任务、促进交流的操作
 /// </summary>
 /// <param name="receiver"></param>
 /// <param name="eventMessage"></param>
 public override void Trigger(string receiver, string eventMessage)
 {
     Intent intent = new Intent(receiver,eventMessage);
     Execute(intent);
 }
 /// <summary>
 /// 根据指定的 <c>Intent</c> 对象传递并执行任务
 /// </summary>
 /// <param name="intent"></param>
 public void Execute(Intent intent)
 {
     ThreadPool.QueueUserWorkItem(RunTask, intent);
 }
 /// <summary>
 /// 执行工作任务
 /// </summary>
 /// <param name="intent"></param>
 public void Trigger(Intent intent)
 {
     Action<Intent> action = _action;
     if (action != null) action(intent);
 }