.net接收邮件

            int newcount;
            List newmsgs &＃61; new List ();

            try
            {
                newcount &＃61; GetNumberOfNewMessages();
                Connect();

                for (int n &＃61; 1; n                 {
                    List msglines &＃61; GetRawMessage(n);
                    string msgsubj &＃61; GetMessageSubject(msglines);
                    if (msgsubj.CompareTo(subj) &＃61;&＃61; 0)
                    {
                        MailMessage msg &＃61; new MailMessage();
                        msg.Subject &＃61; msgsubj;
                        msg.From &＃61; new MailAddress(GetMessageFrom(msglines));
                        msg.Body &＃61; GetMessageBody(msglines);
                        newmsgs.Add(msg);
                        DeleteMessage(n);
                    }
                }

                Disconnect();
                return newmsgs;
            }
            catch (Exception e)
            {
                return newmsgs;
            }
        }

  
 ///

            try
            {
                newcount &＃61; GetNumberOfNewMessages();
                Connect();
                int n &＃61; nIndex &＃43; 1;

                if (n                 {
                    List msglines &＃61; GetRawMessage(n);
                    string msgsubj &＃61; GetMessageSubject(msglines);

                    msg.Subject &＃61; msgsubj;
                    msg.From &＃61; new MailAddress(GetMessageFrom(msglines));
                    msg.Body &＃61; GetMessageBody(msglines);
                }

                Disconnect();
                return msg;
            }
            catch
            {
                return null;
            }
        }

        #endregion

        #region Private

        private bool Connect()
        {
            TcpClient sender &＃61; new TcpClient(POPServer, mPOPPort);
            byte[] outbytes;
            string input;

            try
            {
                ns &＃61; sender.GetStream();
                sr &＃61; new StreamReader(ns);

                sr.ReadLine();
                input &＃61; "user " &＃43; mPOPUserName &＃43; "\r\n";
                outbytes &＃61; System.Text.Encoding.ASCII.GetBytes(input.ToCharArray());
                ns.Write(outbytes, 0, outbytes.Length);
                sr.ReadLine();

                input &＃61; "pass " &＃43; mPOPPass &＃43; "\r\n";
                outbytes &＃61; System.Text.Encoding.ASCII.GetBytes(input.ToCharArray());
                ns.Write(outbytes, 0, outbytes.Length);
                sr.ReadLine();
                return true;

            }
            catch
            {
                return false;
            }
        }

        private void Disconnect()
        {
            string input &＃61; "quit" &＃43; "\r\n";
            Byte[] outbytes &＃61; System.Text.Encoding.ASCII.GetBytes(input.ToCharArray());
            ns.Write(outbytes, 0, outbytes.Length);
            ns.Close();
        }

        private List GetRawMessage(int messagenumber)
        {
            Byte[] outbytes;
            string input;
            string line &＃61; "";

            input &＃61; "retr " &＃43; messagenumber.ToString() &＃43; "\r\n";
            outbytes &＃61; System.Text.Encoding.ASCII.GetBytes(input.ToCharArray());
            ns.Write(outbytes, 0, outbytes.Length);

            List msglines &＃61; new List ();
            do
            {
                line &＃61; sr.ReadLine();
                msglines.Add(line);
            } while (line !&＃61; ".");
            msglines.RemoveAt(msglines.Count - 1);

            return msglines;
        }

        private string GetMessageSubject(List msglines)
        {
            string[] tokens;
            IEnumerator msgenum &＃61; msglines.GetEnumerator();
            while (msgenum.MoveNext())
            {
                string line &＃61; (string)msgenum.Current;
                if (line.StartsWith("Subject:"))
                {
                    tokens &＃61; line.Split(new Char[] { &＃39; &＃39; });
                    return tokens[1].Trim();
                }
            }
            return "None";
        }

        private string GetMessageFrom(List msglines)
        {
            string[] tokens;
            IEnumerator msgenum &＃61; msglines.GetEnumerator();
            while (msgenum.MoveNext())
            {
                string line &＃61; (string)msgenum.Current;
                if (line.StartsWith("From:"))
                {
                    tokens &＃61; line.Split(new Char[] { &＃39; <&＃39; });
                    return tokens[1].Trim(new Char[] { &＃39; <&＃39;, &＃39;>&＃39; });
                }
            }
            return "None";
        }

        private string GetMessageBody(List msglines)
        {
            string body &＃61; "";
            string line &＃61; " ";
            IEnumerator msgenum &＃61; msglines.GetEnumerator();

            while (line.CompareTo("") !&＃61; 0)
            {
                msgenum.MoveNext();
                line &＃61; (string)msgenum.Current;
            }

            while (msgenum.MoveNext())
            {
                body &＃61; body &＃43; (string)msgenum.Current &＃43; "\r\n";
            }
            return body;
        }

        private void DeleteMessage(int messagenumber)
        {
            Byte[] outbytes;
            string input;

            try
            {
                input &＃61; "dele " &＃43; messagenumber.ToString() &＃43; "\r\n";
                outbytes &＃61; System.Text.Encoding.ASCII.GetBytes(input.ToCharArray());
                ns.Write(outbytes, 0, outbytes.Length);
            }
            catch (Exception e)
            {
                return;
            }

        }

        #endregion

        #endregion
    }

    #endregion

方法二

一个asp.net 版本的邮件接收程序&＃xff0c;我们知道&＃xff0c;在asp&＃43;中发送Email是见很方便的事情,可是怎么进行收取pop信件的程序呢&＃xff1f;看来只有拿出豆腐的杀手剑了&＃xff1a;&＃xff09;
首先我们来看看这个程序的代码&＃xff1a;
pop.aspx

<%&＃64; Assembly Name&＃61;"System.Net" %>
<%&＃64; Import Namespace&＃61;"System.Net" %>
<% &＃64;Import Namespace&＃61;"System.Net.Sockets" %>
<%&＃64; Import Namespace&＃61;"System.IO" %>

好了大家通过这个程序&＃xff0c;首先可以了解到pop(Post Ofice Protocal)协议&＃xff0c;其次可以加深对asp.net的socket 程序的
理解&＃xff0c;还可以通过这个程序接收ISP提供的没有Web方式收取邮件的程序对ISP的信箱进行管理。