这是我编的一个邮件接收的简单程序,始终调试不过去.但是用Form窗体去连接的话就能连上服务器
可以返回信息.

编译错误 
说明: 在编译向该请求提供服务所需资源的过程中出现错误。请检查下列特定错误详细信息并适当地修改源代码。 

编译器错误信息: CS0117: “System.Net.Sockets.TcpClient”并不包含对“ScriptTimeout”的定义
源错误:
行 51:                 ASP.WebForm1_aspx.__initialized = true;
行 52:             }
行 53:             this.Server.ScriptTimeout = 30000000;
行 54:         }
行 55:         
 
不知道那位高手能指点一下.

下面是源码:

using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
using System.Net.Sockets;
using System.IO;
using System.Net;
using System.Web.Mail;


namespace PopClient
{
    /// <summary>
    /// WebForm1 的摘要说明。
    /// </summary>
    public class WebForm1 : System.Web.UI.Page
    {
        protected System.Web.UI.WebControls.Label Label1;
        protected System.Web.UI.WebControls.Label Pwd;
        protected System.Web.UI.WebControls.Label Label3;
        protected System.Web.UI.WebControls.TextBox txtUsername;
        protected System.Web.UI.WebControls.Button Button1;
        
        public TcpClient Server;
        public NetworkStream NetStrm;
        public StreamReader  RdStrm;
        public string Data;
        public byte[] szData;
        protected System.Web.UI.WebControls.TextBox PopServer;
        protected System.Web.UI.WebControls.TextBox Password;
        protected System.Web.UI.WebControls.ListBox Status;
        protected System.Web.UI.WebControls.Button Retrieve;
        protected System.Web.UI.WebControls.TextBox RichTextBox;
        protected System.Web.UI.WebControls.TextBox MailNum;
        public string CRLF = "\r\n";
        private void Page_Load(object sender, System.EventArgs e)
        {
            // 在此处放置用户代码以初始化页面
        }
    
        #region Web 窗体设计器生成的代码
        override protected void OnInit(EventArgs e)
        {
            //
            // CODEGEN: 该调用是 ASP.NET Web 窗体设计器所必需的。
            //
            InitializeComponent();
            base.OnInit(e);
        }
        
        /// <summary>
        /// 设计器支持所需的方法 - 不要使用代码编辑器修改
        /// 此方法的内容。
        /// </summary>
        private void InitializeComponent()
        {    
            this.Button1.Click += new System.EventHandler(this.Button1_Click);
            this.Retrieve.Click += new System.EventHandler(this.Retrieve_Click);
            this.Load += new System.EventHandler(this.Page_Load);

        }
        #endregion

        private void Button1_Click(object sender, System.EventArgs e)
        {
            //用110端口新建POP3服务器连接
            Server = new TcpClient(PopServer.Text,110);
            Status.Items.Clear();
            try
            {    
            
                //初始化
                NetStrm = Server.GetStream();
                RdStrm= new StreamReader(Server.GetStream());
                Status.Items.Add(RdStrm.ReadLine());
                //登录服务器过程
                Data = "USER "+ txtUsername.Text+CRLF;
                szData = System.Text.Encoding.ASCII.GetBytes(Data.ToCharArray());
                NetStrm.Write(szData,0,szData.Length);
                Status.Items.Add(RdStrm.ReadLine());
                Data = "PASS "+ Password.Text+CRLF;
                szData = System.Text.Encoding.ASCII.GetBytes(Data.ToCharArray());
                NetStrm.Write(szData,0,szData.Length);
                Status.Items.Add(RdStrm.ReadLine());
                //向服务器发送STAT命令,从而取得邮箱的相关信息:邮件数量和大小
                Data = "STAT"+CRLF;
                szData = System.Text.Encoding.ASCII.GetBytes(Data.ToCharArray());
                NetStrm.Write(szData,0,szData.Length);
                Status.Items.Add(RdStrm.ReadLine());
                
                
            }
            catch(InvalidOperationException err)
            {
                Status.Items.Add("Error: "+err.ToString());
            }

        }

        private void Retrieve_Click(object sender, System.EventArgs e)
        {
            string szTemp;
            try
            {
                //根据邮件编号从服务器获得相应邮件
                Data = "RETR "+ MailNum.Text+CRLF;
                szData = System.Text.Encoding.ASCII.GetBytes(Data.ToCharArray());
                NetStrm.Write(szData,0,szData.Length);
                szTemp = RdStrm.ReadLine();
                if(szTemp[0]!='-')
                {
                    //不断地读取邮件内容,只到结束标志:英文句号
                    while(szTemp!=".")
                    {
                        Retrieve.Text += szTemp;
                        szTemp = RdStrm.ReadLine();
                    }
                    //若BackupChBox未选中,则收取邮件后,删除保留在服务器上的邮件
                }
                else
                {
                    Status.Items.Add(szTemp);
                }
            }
            catch(InvalidOperationException err)
            {
                Status.Items.Add("Error: "+err.ToString());
            }
        }
        
    }
}