发布推文并将图片上传到twitter使用c＃ [英] posting tweets and uploading pictures to twitterusing c#

问题描述

你好，我创建了一个ac＃应用程序，在Twitter上的帐号上发布推文和图片，但我遇到了一个我似乎无法理解的错误。

如果有人帮我找出问题我会感谢谢谢！



这里是代码：

hello i created a c# application that posts tweets and pictures on an account on twitter but im stuck with an error i can't seem to understand.
if someone ca help identify the problem i would appreciate it thanks!

here is the code:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

using TweetSharp;
using Hammock;

namespace TweetNow
{
    class TweetManager
    {

        static public TwitterService initiate()
        {
   String _consumerKey = "epG4Cd8W06r8pxlt05I8Hg";
            String _consumerSecret = "aattB5375aOn0tfpWSj0rdNUiYCwIfsQzwLGG1yVGFE";

            String _accessToken = "479270385-Nda8X27zzi5xBKfUioNm9U8qCOzOvakVSGkS4YJS";
            String _accessTokenSecret = "8rSKr6ph6oRJ4pISjZDny2mMyn4ldX1AoSHwtzx4";
            // Pass your credentials to the service
            TwitterService service = new TwitterService(_consumerKey, _consumerSecret);

            //  Retrieve an OAuth Request Token
            service.AuthenticateWith(_accessToken, _accessTokenSecret);

            return service;
           

        }

 


        public static void sendTweet(String msg,String picname,TwitterService serv) {
           

            RestRequest request = serv.PrepareEchoRequest();
            request.Path = "uploadAndPost.xml";
            request.AddFile("media", "smile", "Images/"+picname, "image/jpeg");
           


            //request.AddField("key", "b9deee8ea5af8a6e1bac2aeb9d541c46"); 
            request.AddField("key", "560adb8b7b328ae25ae3e7d3436de399"); 
            request.AddField("message", "Emote with a Pic!");

        
            RestClient client = new RestClient { Authority = "http://api.twitpic.com/", VersionPath = "2" };
            RestResponse response = client.Request(request);
            Console.WriteLine(response.Content);

            String str = response.Content;
            int first = str.IndexOf("<url>");
            int last = str.LastIndexOf("</url>");
            string str2 = str.Substring(first + 5, last - first - 5);

            serv.SendTweet(msg+" "+str2+" .");
        }
    }
}

和错误我得到的是：

system.ArgumentOutOfRangeException：长度不能小于yero。

参数名称：长度

在System.String.InternalSubStringWithChecks （int32 startIndex，Int32 length，Boolean fAlwaysCopy）

TweetNow.TweetManager.sendTweet（String msg，String picname，TwitterService serv）

d：....

and the error i'm getting is :
system.ArgumentOutOfRangeException: Lenght cannot be less than yero.
Parameter name : length
at System.String.InternalSubStringWithChecks(int32 startIndex,Int32 length,Boolean fAlwaysCopy)
at TweetNow.TweetManager.sendTweet(String msg, String picname,TwitterService serv) in
d: ....

推荐答案

从错误中，我猜 str2 是空白或 null 。

因为你不能发推文空白值。 />


看到 str2 之前的代码，我理解你在 str中没有得到任何东西在下面一行。

From the error, I guess that str2 is either blank or null.
Because you can't tweet blank values.

And see the codes before str2, I apprehend that you are not getting anything in str in the below line.

String str = response.Content;

请调试你的代码并找出你到底在哪里etting values。

Please debug your code and find out where exactly you are not getting values.

你是对的，我确实在你发布你的答案之前就发现了但是你猜对了

但是现在我面临另一个问题，即响应。内容是说Twitter拒绝了标题我该怎么做才能解决这个问题？任何想法？

并再次感谢帮助我：））

you were right,i actually found out before u post ur answer but you guessed it
but now im facing another problem,the response.Content is saying header rejected by twitter what can i do to solve this? any ideas?
and thanks again for helping me :))

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