MqttClientUnSubscribeMessageAsync 方法 (String)

public Task<OperateResult> UnSubscribeMessageAsync(
	string[] topics
)

Public Function UnSubscribeMessageAsync ( 
	topics As String()
) As Task(Of OperateResult)

public:
Task<OperateResult^>^ UnSubscribeMessageAsync(
	array<String^>^ topics
)

member UnSubscribeMessageAsync : 
        topics : string[] -> Task<OperateResult> 

// 简单的实例化例子
MqttClient mqttClient = new MqttClient( new MqttConnectionOptions( )
{
    ClientId = "ABC",                     // 客户端的唯一的ID信息
    IpAddress = "127.0.0.1",              // 服务器的地址
} );

// 取消订阅示例，假设你已经订阅了A的操作
HslCommunication.OperateResult sub = mqttClient.UnSubscribeMessage( "A" );
if (sub.IsSuccess)
{
    // 取消订阅成功
}
else
{
    // 取消订阅失败
    // 需要注意的是，即使是取消订阅失败了，在网络恢复的时候，当前的取消的主题不会再被重新订阅
}