如何使用visual 2013处理telegrambot中的这个错误? [英] How to handle this error in telegrambot with visual 2013?
问题描述
当请求来自用户端对 bot 的 webform 请求时，我希望使用机器人电报响应任何消息，但是当 rs.message 的值为 null 时，程序错误.
I want with bot telegram Response any message when The request comes from the user's side for bot by webform, but When the value of rs.message is null, Program error.
错误:
BotTelegramWeb.dll 中发生了System.NullReferenceException"类型的异常，但未在用户代码中处理
An exception of type 'System.NullReferenceException' occurred in BotTelegramWeb.dll but was not handled in user code
C# 2013 update3网络表单 2013 更新 3
C# 2013 update3 webform 2013 update3
摘要代码:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using Telegram.Bot;
using Telegram.Bot.Types;
using Telegram.Bot.Helpers;
using System.IO;
using Newtonsoft.Json;
using System.Net;
namespace BotTelegramWeb
{
public partial class TaktopBot : System.Web.UI.Page
{
//Api bot = new Api("Token");
Telegram.Bot.TelegramBotClient Bot = new Telegram.Bot.TelegramBotClient("Token");
public class mydata
{
public result[] result;
}
public class result
{
public int update_id { get; set; }
public message message { get; set; }
}
public class message
{
public int message_id { get; set; }
public message_from from { get; set; }
public message_chat chat { get; set; }
public int date { get; set; }
public string text { get; set; }
}
public class message_from
{
public int ind { get; set; }
public string first_name { get; set; }
public string username { get; set; }
}
public class message_chat
{
public int id { get; set; }
public string first_name { get; set; }
public string username { get; set; }
}
public static void SendMessage(string chat_id, string message)
{
WebRequest req = WebRequest.Create("https://api.telegram.org/Token/sendMessage?chat_id=@BestLaptopBuyTest&text=123");
req.UseDefaultCredentials = true;
var result = req.GetResponse();
req.Abort();
}
protected void Page_Load(object sender, EventArgs e)
{
WebRequest req = WebRequest.Create("https://api.telegram.org/bot" + "Token" + "/getUpdates");
req.UseDefaultCredentials = true;
WebResponse resp = req.GetResponse();
Stream stream = resp.GetResponseStream();
StreamReader sr = new StreamReader(stream);
string s = sr.ReadToEnd();
sr.Close();
var jobject = Newtonsoft.Json.Linq.JObject.Parse(s);
mydata gg = JsonConvert.DeserializeObject<mydata>(jobject.ToString());
List<result> results = new List<result>();
foreach (result rs in gg.result)
{
results.Add(rs);
SendMessage(rs.message.chat.id.ToString(), "hello" + " " + "Dear" + rs.message.chat.first_name);
}
}
}
}
错误:
BotTelegramWeb.dll 中发生了System.NullReferenceException"类型的异常，但未在用户代码中处理
An exception of type 'System.NullReferenceException' occurred in BotTelegramWeb.dll but was not handled in user code
1. 来自bot的gg.result`消息的一条消息为空.如何不获取空消息.
1.one message of gg.result`messages from bot is null.How to not get null message.
我想在用户发送任何消息时使用机器人发送消息，但我不能.
i want to send message with bot when user send any message but i can not.
在这个例子中如何使用 webhook 方法代替 update 方法?
how to can use webhook method Instead update method in this example?
来自:https://api.telegram.org/Token/getUpdates
{"ok":true,"result":[{"update_id":547758881,
"message":{"message_id":11,"from":{"id":301646351,"first_name":"s","last_name":"s"},"chat":{"id":301646351,"first_name":"s","last_name":"s","type":"private"},"date":1482667543,"text":"s"}},{"update_id":547758882,
"message":{"message_id":12,"from":{"id":301646351,"first_name":"s","last_name":"s"},"chat":{"id":301646351,"first_name":"s","last_name":"s","type":"private"},"date":1482667701,"text":"a"}},{"update_id":547758883,
"channel_post":{"message_id":26,"chat":{"id":-1001096443511,"title":"BestLaptopBuyTest","username":"BestLaptopBuyTest","type":"channel"},"date":1482671517,"text":"hello"}},{"update_id":547758884,
"message":{"message_id":21,"from":{"id":301646351,"first_name":"s","last_name":"s","username":"TestMohsen1"},"chat":{"id":301646351,"first_name":"s","last_name":"s","username":"TestMohsen1","type":"private"},"date":1482676503,"text":"s"}},{"update_id":547758885,
"message":{"message_id":45,"from":{"id":301646351,"first_name":"s","last_name":"s","username":"TestMohsen1"},"chat":{"id":301646351,"first_name":"s","last_name":"s","username":"TestMohsen1","type":"private"},"date":1482677210,"text":"ab"}},{"update_id":547758886,
"channel_post":{"message_id":112,"chat":{"id":-1001096443511,"title":"BestLaptopBuyTest","username":"BestLaptopBuyTest","type":"channel"},"date":1482741137,"text":"mohsen"}},{"update_id":547758887,
"message":{"message_id":144,"from":{"id":301646351,"first_name":"s","last_name":"s","username":"TestMohsen1"},"chat":{"id":301646351,"first_name":"s","last_name":"s","username":"TestMohsen1","type":"private"},"date":1482741149,"text":"mohsen"}},{"update_id":547758888,
"message":{"message_id":145,"from":{"id":301646351,"first_name":"s","last_name":"s","username":"TestMohsen1"},"chat":{"id":301646351,"first_name":"s","last_name":"s","username":"TestMohsen1","type":"private"},"date":1482741163,"text":"ma"}},{"update_id":547758889,
"message":{"message_id":146,"from":{"id":301646351,"first_name":"s","last_name":"s","username":"TestMohsen1"},"chat":{"id":301646351,"first_name":"s","last_name":"s","username":"TestMohsen1","type":"private"},"date":1482747400,"text":"salam"}}]}
推荐答案
试试下面的代码
int Offset = 0 ;
WebRequest req = WebRequest.Create("https://api.telegram.org/bot" + "Token" + "/getUpdates?offset=" + Offset;);
req.UseDefaultCredentials = true;
WebResponse resp = req.GetResponse();
Stream stream = resp.GetResponseStream();
StreamReader sr = new StreamReader(stream);
string s = sr.ReadToEnd();
sr.Close();
var jobject = Newtonsoft.Json.Linq.JObject.Parse(s);
mydata gg = JsonConvert.DeserializeObject<mydata>(jobject.ToString());
List<result> results = new List<result>();
foreach (result rs in gg.result)
{
results.Add(rs);
SendMessage(rs.message.chat.id.ToString(), "hello" + " " + "Dear" + rs.message.chat.first_name);
}
1.offset 仅用于新更新.2.webhook 本地测试后使用.3. 跳过 null ，使用并测试 callbackQuery.
1.offset for only new Updates. 2.webhook used after local test. 3. for skip null , use and test callbackQuery.
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