/// <summary>
        /// 对控件操作 在非主线程下需要调用此代理
        /// </summary>
        private delegate void MyInvoke(BitmapImage img);

        /// <summary>
        /// 接收信息事件
        /// </summary>
        /// <param name="socket"></param>
        /// <param name="e"></param>

        private void ReceiveEvent(SocketUdpServer socket, EventArgs e)
        {
            this.Dispatcher.Invoke(new MyInvoke(ChangeImage), socket.Img);
        }
        /// <summary>
        /// 改变图片
        /// </summary>
        /// <param name="img">图片</param>
        private void ChangeImage(BitmapImage img)
        {
            this.picReceive.Source = img;
        }