c#中使用httpwebrequest报操作超时的问题

[zhaoenxiang100]

以下是我查的代码，但是不能运行总是报：操作超时，由于我不懂c#，不知道怎么修改，所以小妹我拜托各位了.
private string GetWebContent(string Url)
{
string strResult="";
try
{
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(Url);
　　　　//声明一个HttpWebRequest请求
request.Timeout = 30000;
//设置连接超时时间
request.Headers.Set("Pragma", "no-cache");
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
Stream streamReceive = response.GetResponseStream();
Encoding encoding = Encoding.GetEncoding("GB2312");
StreamReader streamReader = new StreamReader(streamReceive, encoding);
strResult = streamReader.ReadToEnd();
}
catch
{
MessageBox.Show("出错");
}
return strResult;
}

[jingshuaizhjason]

我用你的代码运行 没有 问题， 可能是你的这个url 不可访问 一下为测试代码

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Net;
using System.IO;

namespace testrequest
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            
            string strResult=""; 
            try 
            { 
                HttpWebRequest request = (HttpWebRequest)WebRequest.Create("http://www.sohu.com"); 
　　　　//声明一个HttpWebRequest请求 
                request.Timeout = 30000; 
                //设置连接超时时间 
                request.Headers.Set("Pragma", "no-cache"); 
                HttpWebResponse response = (HttpWebResponse)request.GetResponse(); 
                Stream streamReceive = response.GetResponseStream(); 
                Encoding encoding = Encoding.GetEncoding("GB2312"); 
                StreamReader streamReader = new StreamReader(streamReceive, encoding); 
                strResult = streamReader.ReadToEnd(); 
            } 
            catch 
            { 
                MessageBox.Show("出错"); 
            } 
            
            this.richTextBox1.Text = strResult;
         

        }
    }
}