C#获取QQ在线状态代码

来源：互联网发布：北京国税开票软件编辑：程序博客网时间：2024/04/30 18:38

QQ号码查询结果查询语句
21117217 GIF89aJ http://wpa.qq.com/pa?p=1:21117217:3
195651222 GIF89aK http://wpa.qq.com/pa?p=1: 252520115:3
426002343 GIF89aJ http://wpa.qq.com/pa?p=1: 4366727:3

///添加相关引用

using System.IO;
using System.Net;
using System.Text;

//按钮事件

private void button3_Click(object sender, System.EventArgs e)
  {

   if(textBox3.Text=="")
   {
    MessageBox.Show("必须填写当前的查询的QQ号码!","错误提示!");
    textBox3.Focus();
    return;
   }
   else
   {
    string strQQ=textBox3.Text.Trim();
    string strSearchQQ="http://wpa.qq.com/pa?p=1:"+strQQ+":3";
    string strQQStatus=GetWebContent(strSearchQQ).Substring(0,7);
    switch(strQQStatus)
    {
     case "GIF89aK":MessageBox.Show(strQQ+"不在线","QQ状态提示!");
      break;
     case "GIF89aJ":MessageBox.Show(strQQ+"不在线","QQ状态提示!");
      break;
    }
   }
  }

//调用函数

//根据Url地址得到网页的html源码
  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;
  }