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using System;
using System.ComponentModel;using System.Web.UI;using System.Web.UI.WebControls;using System.Xml.Serialization;using System.Net;using System.IO;using System.Web;using System.Web.Mail;using System.IO;using System.Net;using System.Net.Sockets;

string url = "http://192.168.11.57/default.aspx" string username = "administrator" string password  = "Pass@word" string domain= "tym" string respstr = "" Uri contentUrl = new Uri(url) WebRequest req = WebRequest.Create(contentUrl)
'设置预先验证用户权限   
   req.PreAuthenticate = true     
'建立网络身份验证     
 System.Net.NetworkCredential mycredential  = new System.Net.NetworkCredential(username,password,domain)
     req.Credentials = mycredential
           '获取远端返回的文件流     
  WebResponse  resp = req.GetResponse()
Stream stream = resp.GetResponseStream()     
 StreamReader sr = new StreamReader(stream)      '以字符串形式读取数据流     
respstr = sr.ReadToEnd()   
sr.Close()
Response.Write(respstr)