学步园

using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
  using System.Web.UI;
  using System.Web.UI.WebControls;
  using System.Web.UI.WebControls.WebParts;
  using System.Web.UI.HtmlControls;
 using System.Net;
 using System.Text;
 using System.IO;
 
 public partial class _Default : System.Web.UI.Page
 {
     protected void Page_Load(object sender, EventArgs e)
     {
         //获取URL地址
         string url = Request.Url.ToString();
         txtUrl.Text = url;
         //获取IP地址
         string ips= Request.UserHostAddress.ToString();
         txtIp.Text = ips;
         //浏览器
         string fr = Request.Browser.Type.ToString();
         txtbrows.Text = fr;
         string cp ;//= Request.UserAgent.ToString()
         //操作系统
        cp=GetOSNameByUserAgent(Request.UserAgent.ToString());
        txtcp.Text = cp;
         //浏览器版本号
         //this.txtbrows.Text = Request.Browser.ClrVersion.ToString();
        // txtUrl.Text = Request.ServerVariables["http_referer"];
     }
 
     protected void btnGet_Click(object sender, EventArgs e)
     {
         txtUrl.Text = Request.ServerVariables["http_referer"];//ServerViables["http_referer"];
         string strurl= txtUrl.Text.ToString(); //欲获取的网页地址 要  http://
         WebClient myWebClient = new WebClient(); //创建WebClient实例myWebClient
 
         //获取或设置用于对向 Internet 资源的请求进行身份验证的网络凭据。
         myWebClient.Credentials = CredentialCache.DefaultCredentials;
        // Request.ServerVariables("HTTP_HOST");
         //从资源下载数据并返回字节数组。（加@是因为网址中间有"/"符号）
         byte[] pagedata = myWebClient.DownloadData(@strurl);
       
        string result = Encoding.Default.GetString(pagedata); //如果获取网站页面采用的是GB2312，则使用这句
         //string result = Encoding.UTF8.GetString(pagedata); //如果获取网站页面采用的是UTF-8，则使用这句
         Response.Write(result); //在WEB页中显示获取的内容
         Panel1.Visible = false;
 
     }
     /**//// <summary> 
     /// 根据 User Agent 获取操作系统名称 
     /// </summary> 
     private string GetOSNameByUserAgent(string userAgent)
     {
         string osVersion = "未知";
 
         if (userAgent.Contains("NT 6.0"))
         {
             osVersion = "Windows Vista/Server 2008";
         }
         else if (userAgent.Contains("NT 5.2"))
         {
             osVersion = "Windows Server 2003";
         }
         else if (userAgent.Contains("NT 5.1"))
         {
             osVersion = "Windows XP";
         }
         else if (userAgent.Contains("NT 5"))
         {
             osVersion = "Windows 2000";
         }
         else if (userAgent.Contains("NT 4"))
         {
             osVersion = "Windows NT4";
         }
         else if (userAgent.Contains("Me"))
         {
             osVersion = "Windows Me";
         }
         else if (userAgent.Contains("98"))
         {
             osVersion = "Windows 98";
         }
         else if (userAgent.Contains("95"))
         {
             osVersion = "Windows 95";
         }
         else if (userAgent.Contains("Mac"))
         {
             osVersion = "Mac";
         }
         else if (userAgent.Contains("Unix"))
         {
             osVersion = "UNIX";
        }
        else if (userAgent.Contains("Linux"))
        {
            osVersion = "Linux";
        }
        else if (userAgent.Contains("SunOS"))
        {
            osVersion = "SunOS";
        }
        return osVersion;
    }
}

原文地址：http://www.cnblogs.com/geovindu/archive/2009/09/14/1566419.html