Question

我正在使用Telegeram.bot在.net上开发简单的电报机器人我将我的机器人（管理员）添加到公共频道，我希望从频道重新发送消息并重新发送给机器人用户

但我有问题，这是我的代码

#region Properties
    private Api bot;
    string botToken = "Bot Token";
#endregion

#region Constructor
/// <summary>
/// Basic constructor for the api controller
/// </summary>
public WebhookController()
{
    bot = new Api(botToken);
}

#endregion

public async Task<IHttpActionResult> Post(Update update)
{
    var text = update.Message.Text;
    var chatType = update.Message.Chat.Type;

    if (chatType == ChatType.Channel)
    {

        // Send Text message to users that previusly we gathered their telegram id and saved them in our DB
        // ******Problem is here******
    }

    else if (chatType == ChatType.Private)

    {
        if (text != null && text.Contains("/start") || text.Contains("start"))
        {
            await bot.SendTextMessage(chatId: update.Message.Chat.Id, text: "START");
        }
    }
    else
    {
        await bot.SendTextMessage(chatId: update.Message.Chat.Id, text: "ERROR!!!");
    }

    return Ok();
}

public string Get()
{
    return "Yes Its Work";
}

但我收到500内部服务器错误

"Message": "An error has occurred.",
"ExceptionMessage": "Object reference not set to an instance of an object.",
"ExceptionType": "System.NullReferenceException",
"StackTrace": "   at CodeBlock.Bot.Engine.Controllers.webhookController.<Post>d__11.MoveNext()\r\n--- End of stack trace from previous location where exception was thrown ---\r\n   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)\r\n   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n   at System.Threading.Tasks.TaskHelpersExtensions.<CastToObject>d__3`1.MoveNext()\r\n--- End of stack trace from previous location where exception was thrown ---\r\n   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)\r\n   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n   at System.Web.Http.Controllers.ApiControllerActionInvoker.<InvokeActionAsyncCore>d__0.MoveNext()\r\n--- End of stack trace from previous location where exception was thrown ---\r\n   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)\r\n   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n   at System.Web.Http.Controllers.ActionFilterResult.<ExecuteAsync>d__2.MoveNext()\r\n--- End of stack trace from previous location where exception was thrown ---\r\n   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)\r\n   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n   at System.Web.Http.Controllers.AuthenticationFilterResult.<ExecuteAsync>d__0.MoveNext()\r\n--- End of stack trace from previous location where exception was thrown ---\r\n   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)\r\n   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n   at System.Web.Http.Dispatcher.HttpControllerDispatcher.<SendAsync>d__1.MoveNext()"

如何从电报频道收到消息到我的机器人？

0 个答案: