阿里云物联网 .NET Core 客户端 | CZGL.AliIoTClient：9. 自定义委托事件方法
CZGL.AliIoTClient 有7个委托事件，设置了默认的方法。你可以通过下面的方法使用默认的方法绑定到委托事件中。 public void UseDefaultEventHandler() 1）默认的方法 收到服务器下发属性设置时： public void Default_PubPropertyEventHandler(object sender, MqttMsgPublishEventArgs e) 收到服务器调用服务命令时： public void Default_PubServiceEventHandler(object sender, MqttMsgPublishEventArgs e) 收到普通Topic、上传数据的响应等其它情况： public void Default_PubCommonEventHandler(object sender, MqttMsgPublishEventArgs e) 收到服务器QOS为1的推送 public void Default_PubedEventHandler(object sender, MqttMsgPublishedEventArgs e) 当向服务器发送消息成功时： public void Default_SubedEventHandler(object sender, MqttMsgSubscribedEventArgs e) 向服务器推送消息失败时： public void Default_UnSubedEventHandler(object sender, MqttMsgUnsubscribedEventArgs e) 连接断开时 public void Default_ConnectionClosedEventHandler(object sender, System.EventArgs e) 2）方法的写法 不同的委托参数不同，有好几种类型，参考笔者的方法使用参数。 /// 一般的推送 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> public void Default_PubCommonEventHandler(object sender, MqttMsgPublishEventArgs e) { // handle message received string topic = e.Topic; string message = Encoding.ASCII.GetString(e.Message); Console.WriteLine("- - - - - - - - - - "); Console.WriteLine("get topic message,Date: " + DateTime.Now.ToLongTimeString()); Console.WriteLine("topic: " + topic); Console.WriteLine("get messgae :\n" + message); } /// <summary> /// 收到属性设置 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> public void Default_PubPropertyEventHandler(object sender, MqttMsgPublishEventArgs e) { // handle message received string topic = e.Topic; string message = Encoding.ASCII.GetString(e.Message); Console.WriteLine("- - - - - - - - - - "); Console.WriteLine("get topic message,Date: " + DateTime.Now.ToLongTimeString()); Console.WriteLine("topic: " + topic); Console.WriteLine("get messgae :\n" + message); } /// <summary> /// 收到服务调用 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> public void Default_PubServiceEventHandler(object sender, MqttMsgPublishEventArgs e) { // handle message received string topic = e.Topic; string message = Encoding.ASCII.GetString(e.Message); Console.WriteLine("- - - - - - - - - - "); Console.WriteLine("get topic message,Date: " + DateTime.Now.ToLongTimeString()); Console.WriteLine("topic: " + topic); Console.WriteLine("get messgae :\n" + message); } /// <summary> /// 收到服务器QOS为1的推送 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> public void Default_PubedEventHandler(object sender, MqttMsgPublishedEventArgs e) { Console.WriteLine("- - - - - - - - - - "); Console.WriteLine("published,Date: " + DateTime.Now.ToLongTimeString()); Console.WriteLine("MessageId: " + e.MessageId + " Is Published: " + e.IsPublished); } /// <summary> /// 向服务器推送成功 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> public void Default_SubedEventHandler(object sender, MqttMsgSubscribedEventArgs e) { Console.WriteLine("- - - - - - - - - - "); Console.WriteLine("Sub topic,Date: " + DateTime.Now.ToLongTimeString()); Console.WriteLine("MessageId: " + e.MessageId); Console.WriteLine("List of granted QOS Levels: " + Encoding.UTF8.GetString(e.GrantedQoSLevels)); } /// <summary> /// 推送失败 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> public void Default_UnSubedEventHandler(object sender, MqttMsgUnsubscribedEventArgs e) { Console.WriteLine("- - - - - - - - - - "); Console.WriteLine("Sub topic error,Date: " + DateTime.Now.ToLongTimeString()); Console.WriteLine("MessageId: " + e.MessageId); } /// <summary> /// 连接发生异常，断网等 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> public void Default_ConnectionClosedEventHandler(object sender, EventArgs e) { Console.WriteLine("- - - - - - - - - - "); Console.WriteLine("Connect Closed error,Date: " + DateTime.Now.ToLongTimeString()); }
