/// <summary>
    /// 发送消息到设备
    /// </summary>
    /// <param name="device_productKey">产品Key</param>
    /// <param name="device_topic">设备topic</param>
    /// <param name="msgContent">消息内容</param>
    public static bool Pub(long device_productKey,string device_topic,string msgContent)
    {
        IClientProfile clientProfile = DefaultProfile.GetProfile("cn-shanghai", "accessKeyId", "secret");
        DefaultAcsClient client = new DefaultAcsClient(clientProfile);
        try
        {
            byte[] bytes = Encoding.UTF8.GetBytes(msgContent);
            string strContent = Convert.ToBase64String(bytes);

            PubRequest pub = new PubRequest();
            pub.ProductKey = device_productKey;
            pub.MessageContent = strContent;
            pub.TopicFullName = device_topic;
            pub.Qos = 1;
            PubResponse resp = client.GetAcsResponse(pub);
            return true;
        }
        catch (Exception err)
        {
            Console.Write(err.Message);
            return false;
        }
    }

    /// <summary>
    /// 创建设备
    /// </summary>
    /// <param name="productKey">设备所属的产品Key</param>
    /// <param name="deviceName">设备名称(支持英文字母、数字和特殊字符-_@.:，长度限制4~32)</param>
    public static RegistDeviceResponse Create(string productKey, string deviceName)
    {
        IClientProfile clientProfile = DefaultProfile.GetProfile("cn-shanghai", "accessKeyId", "secret");
        DefaultAcsClient client = new DefaultAcsClient(clientProfile);

        try
        {
            RegistDeviceRequest request = new RegistDeviceRequest();
            request.ProductKey = productKey;
            request.DeviceName = deviceName;//
            RegistDeviceResponse resp = client.GetAcsResponse(request);
            if (resp.Success == null || !resp.Success.Value)
            {
                return null;
            }
       
            return resp;
        }
        catch (Exception err)
        {
            Console.WriteLine(err.Message);
            return null;
        }
    }