1 .net中自定义事件的步骤

 public class ClientSocketModelConnectedEvent:EventArgs
    {
        private string param;
        public string Data
        {
            get
            {
                return param;
            }
            set
            {
                value = param;
            }
        }
        public ClientSocketModelConnectedEvent(string data)
        {
            this.param = data;
        }
    }

    public delegate void delConnectedEvent(object sender, ClientSocketModelConnectedEvent _ClientSocketModelConnectedEvent);

 //定义事件，当客户端成功连接server后就触发此事件
        public event delConnectedEvent ConnectedServer;

   private void ConnectedReceive(IAsyncResult ar)
        {
            CurrnetClientSocket = ar.AsyncState as Socket;
            CurrnetClientSocket.EndReceive(ar);
            string data = Encoding.UTF8.GetString(bufferSize);
            if (ConnectedServer != null)
            {
                this.ConnectedServer(this, new ClientSocketModelConnectedEvent(data));
            }
        }