让bot在特定时间每天发送消息

Question

我正在用Bot Framework构建一个机器人，应该在MS Teams运行，我希望它每天早上6:30给我发消息。

我有一个方法，每天在6:30在Program文件中调用。我有一个从机器人发送消息的方法。

这是我的计时器的代码：

private static Timer _timer;

    private static int count = 1;


    public static void Main(string[] args)
    {        
        //Initialization of _timer   
        _timer = new Timer(x => { callTimerMethod(); }, null, Timeout.Infinite, Timeout.Infinite);
        Setup_Timer();

        BuildWebHost(args).Run();
    }

    /// <summary>  
    /// This method will execute every day at 06:30.   
    /// </summary>  
    public static void callTimerMethod()
    {
        System.Diagnostics.Debug.WriteLine(string.Format("Method is called"));
        System.Diagnostics.Debug.Write(DateTime.Now.ToString("dddd, dd MMMM yyyy HH:mm:ss"));
        count = count + 1;
    }

    /// <summary>  
    /// This method will set the timer execution time and will change the   
    /// tick time of timer.
    /// </summary>  
    private static void Setup_Timer()
    {
        DateTime currentTime = DateTime.Now;
        DateTime timerRunningTime = new DateTime(currentTime.Year, currentTime.Month, currentTime.Day, 6, 30, 0);
        timerRunningTime = timerRunningTime.AddDays(1);

        double tickTime = (double)(timerRunningTime - DateTime.Now).TotalSeconds;

        _timer.Change(TimeSpan.FromSeconds(tickTime),
        TimeSpan.FromSeconds(tickTime));
    }

我要归档的是我想将callTimerMethod()的内容更改为此方法：

public async Task AlertSubscribers(ITurnContext turncontext, CancellationToken cancellationToken = default(CancellationToken))
    {
        using (var db = new DataBaseContext())
        {
            var msg = "";
            var today = DateTime.Today.ToString("dddd");
            var product = db linq code;

            foreach(var prod in product)
            {
                msg = $"Reminder! {prod.bla}";
            }

            // Get the conversation state from the turn context.
            var state = await _accessors.CounterState.GetAsync(turncontext, () => new CounterState());

            // Set the property using the accessor.
            await _accessors.CounterState.SetAsync(turncontext, state);

            // Save the new turn count into the conversation state.
            await _accessors.ConversationState.SaveChangesAsync(turncontext);

            // Echo back to the user whatever msg is.
            await turncontext.SendActivityAsync(msg);
        }
    }

但我找不到一种方法来存档它...真的很感激一些帮助，我已经搜索了很多但没有发现类似的问题。

问题是所有命名空间（例如ITurncontext，Conversationstate等等......）

希望能描述我的问题......

提前致谢！

编辑：

它不一定需要成为AlertSubscribers()方法，而是一个函数，只是代码执行类似的事情。

我已经尝试过这段代码，但是我无法让它让机器人向用户发送消息（在本例中我是在模拟器中）：

public static void callTimerMethod()
    {
        IMessageActivity message = Activity.CreateMessageActivity();

        message.Text = "Hello!";
        message.TextFormat = "plain";
        message.Locale = "en-Us";
        message.ChannelId = "emulator";
        message.Id = "A guid";
        message.InputHint = "acceptingInput";
        message.LocalTimestamp = DateTimeOffset.Now;
        message.ReplyToId = "A guid";
        message.ServiceUrl = "http://localhost:50265";
        message.Timestamp = DateTimeOffset.Now;
        message.Type = "ConversationUpdate";

        message.AsConversationUpdateActivity();
    }

我是Bot框架的新手，所以我的代码和我的问题可能是错误的......