I am new developer in c#
Actually I wanted to read mail attachement .
I already did coding on sending mail through SMTP.
But I don't know how to read mail
Can anyone help how I can do it,
Though CDO , MAPI ,POP3 protocol

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Flat

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False


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µÚÈý²½£º´úÂë±àд¡£Ê×ÏÈÒòÎ ª³ÌÐòÖÐÔËÓõ½ÍøÂç±à³ÌµÄÒ» ЩÖØÒªµÄÀ࣬È磺TcpClient¡¢Netwo rkStream£¬ËùÒÔÔÚ³ÌÐòµÄ¿ªÍ·´¦Ð èÌí¼ÓÒÔÏÂÃû×ֿռ䣨Namespace£ ©Â£Âº

using System.Net;

using System.Net.Sockets;

using System.IO;

½Ó×Å£¬ÎªÎÒÃǵÄÀàÌí¼ÓÒÔÏÂÒ »Ð©¹«ÓеÄÊý¾Ý³ÉÔ±£º

public TcpClient Server;

public NetworkStream NetStrm;

public StreamReader RdStrm;

publicstring Data;

publicbyte[] szData;

publicstring CRLF = "\r\n";

×îºó£¬±ãÊÇÈý¸ö°´Å¥µÄÏûÏ¢Ï ìÓ¦º¯Êý£¬ÕâÈý¸öº¯ÊýÊdzÌÐò µÄÖ÷Ì岿·Ö¡£ÆäÖÐConnect°´Å¥µà „ÏûÏ¢ÏìÓ¦º¯ÊýÍê³ÉÁ˵½POP3·þà ŽÃ±Ã†Ã·ÂµÃ„ÃÂ¬Â½Ã“Â¹Â¤Ã—Ã·Â£Â¬Â²Â¢Â¸Ã¹Â¾ÃÃ“ÃƒÂ»Â §ÃƒÃ»ÂºÃÃƒÃœÃ‚ë½øÐеǼ¡£Èç¹ûÒ»à ‡ÃÃ‹Â³Ã€Ã»Â£Â¬Ã”òÔÙÏò·þÎñÆ÷·¢ËÍSTA TÃüÁî´Ó¶ø»ñµÃÓÊÏäÖÐÓʼþµÄà Ã Â¹Ã˜ÃÃ…ÃÂ¢Â£ÂºÃ“ÃŠÂ¼Ã¾ÃŠÃ½ÃÂ¿ÂºÃÂ´Ã³ÃÂ¡Â£Â ¬Ã—îÖÕÍê³ÉÁ¬½Ó¡£Æ亯ÊýʵÏÖà ˆÃ§ÃÃ‚£º
privatevoid Connect_Click(object sender, System.EventArgs e)

{

//½«¹â±êÖÃΪµÈ´ý״̬

Cursor cr = Cursor.Current;

Cursor.Current = Cursors.WaitCursor;



//ÓÃ110¶Ë¿Úн¨POP3·þÎñÆ÷Á¬½Ó

Server = new TcpClient(PopServer.Text,110);

Status.Items.Clear();



try

{

//³õʼ»¯

NetStrm = Server.GetStream();

RdStrm= new StreamReader(Server.GetStream());

Status.Items.Add(RdStrm.ReadLine());



//µÇ¼·þÎñÆ÷¹ý³Ì

Data = "USER "+ Username.Text+CRLF;

szData = System.Text.Encoding.ASCII.GetBytes(Data.ToCharArr ay());

NetStrm.Write(szData,0,szData.Length);

Status.Items.Add(RdStrm.ReadLine());



Data = "PASS "+ Password.Text+CRLF;

szData = System.Text.Encoding.ASCII.GetBytes(Data.ToCharArr ay());

NetStrm.Write(szData,0,szData.Length);

Status.Items.Add(RdStrm.ReadLine());



//Ïò·þÎñÆ÷·¢ËÍSTATÃüÁ´Ó¶øÈ ¡µÃÓÊÏäµÄÏà¹ØÐÅÏ¢£ºÓʼþÊý Á¿ºÍ´óС

Data = "STAT"+CRLF;

szData = System.Text.Encoding.ASCII.GetBytes(Data.ToCharArr ay());

NetStrm.Write(szData,0,szData.Length);

Status.Items.Add(RdStrm.ReadLine());



//¸Ä±ä°´Å¥µÄ״̬

Connect.Enabled = false;

Disconnect.Enabled = true;

Retrieve.Enabled = true;



//½«¹â±êÖûØÔ­À´µÄ״̬

Cursor.Current = cr;



}

catch(InvalidOperationException err)

{

Status.Items.Add("Error: "+err.ToString());

}

}



¶øDisconnect°´Å¥µÄÏûÏ¢ÏìÓ¦º¯Êý Ôòͨ¹ýÏò·þÎñÆ÷·¢ËÍQUITÃüÁîÀ ´ÖÕÖ¹ºÍÓʼþ·þÎñÆ÷µÄÁ¬½Ó£¬ ʵÏֱȽϼòµ¥£¬¾ßÌ庯ÊýÈçÏ Â£º
privatevoid Disconnect_Click(object sender, System.EventArgs e)

{

//½«¹â±êÖÃΪµÈ´ý״̬

Cursor cr = Cursor.Current;

Cursor.Current = Cursors.WaitCursor;



//Ïò·þÎñÆ÷·¢ËÍQUITÃüÁî´Ó¶ø½áÊ øºÍPOP3·þÎñÆ÷µÄ»á»°

Data = "QUIT"+CRLF;

szData = System.Text.Encoding.ASCII.GetBytes(Data.ToCharArr ay());

NetStrm.Write(szData,0,szData.Length);

Status.Items.Add(RdStrm.ReadLine());



//¶Ï¿ªÁ¬½Ó

NetStrm.Close();

RdStrm.Close();



//¸Ä±ä°´Å¥µÄ״̬

Connect.Enabled = true;

Disconnect.Enabled = false;

Retrieve.Enabled = false;



//½«¹â±êÖûØÔ­À´µÄ״̬

Cursor.Current = cr;

}




×îºó£¬Retrieve°´Å¥µÄÏûÏ¢ÏìÓ¦º ¯ÊýÔò¸ù¾ÝÓû§ÔÚÓʼþ±àºÅÎÄ ±¾¿òÖеÄÊäÈëÀ´È¡µÃÏàÓ¦µÄÓ ʼþ£¬ËüÏò·þÎñÆ÷·¢Ë͵ÄÃüÁî ΪRETR£¬²¢¸ù¾Ý·µ»ØµÄÐÅÏ¢Åж ÏÓʼþµÄÓÐÎÞ¡£Èô·µ»ØÐÅÏ¢µÄ µÚÒ»¸ö×Ö·ûΪ¡°+¡±£¬Ôò±íʾ+ OK£¬Ò²¼´³É¹¦£»ÈôΪ¡°-¡±£¬Ôò±íʾ-ERR£¬Ò²¼´ÎªÊ§°Ü¡£Ôڳɹ¦µÄÇà ©Â¿Ã¶ÃÃ‚Â£Â¬ÃˆÃ´Ã“ÃƒÂ»Â§Ã‘Â¡Ã”Ã±ÃÃ‹Â¡Â°Ã”ÃšÃ“ÃŠÂ ¼Ã¾Â·Ã¾ÃŽÃ±Ã†Ã·Ã‰ÃÂ±Â£ÃÃ´Â±Â¸Â·ÃÂ¡Â±Â£Â¬Ã”òÊà •ÃˆÂ¡Ã“ʼþºó²»É¾³ý·þÎñÆ÷ÉϵĠ±Â¸Â·ÃÂ£Â¬Â·Ã±Ã”òÓÃDELEÃüÁîÀ´½øÐÐÏà  Ã“Â¦ÂµÃ„Ã‰Â¾Â³Ã½Â¡Â£ÂºÂ¯ÃŠÃ½ÃŠÂµÃÃ–ÃˆÃ§ÃÃ‚Â£Âºp rivatevoid Retrieve_Click(object sender, System.EventArgs e)

{

//½«¹â±êÖÃΪµÈ´ý״̬

Cursor cr = Cursor.Current;

Cursor.Current = Cursors.WaitCursor;

string szTemp;

Message.Clear();



try

{

//¸ù¾ÝÓʼþ±àºÅ´Ó·þÎñÆ÷»ñµÃÏ àÓ¦Óʼþ

Data = "RETR "+ MailNum.Text+CRLF;

szData = System.Text.Encoding.ASCII.GetBytes(Data.ToCharArr ay());

NetStrm.Write(szData,0,szData.Length);

szTemp = RdStrm.ReadLine();



if(szTemp[0]!='-')

{

//²»¶ÏµØ¶ÁÈ¡ÓʼþÄÚÈÝ£¬Ö»µ½½ áÊø±êÖ¾£ºÓ¢ÎľäºÅ

while(szTemp!=".")

{

Message.Text += szTemp;

szTemp = RdStrm.ReadLine();

}



//ÈôBackupChBoxδѡÖУ¬ÔòÊÕÈ¡Óʼà ¾ÂºÃ³Â£Â¬Ã‰Â¾Â³Ã½Â±Â£ÃÃ´Ã”ÃšÂ·Ã¾ÃŽÃ±Ã†Ã·Ã‰ÃÂµÃ„Ã “ʼþ

if(BackupChBox.Checked == false)

{

Data = "DELE" + MailNum.Text + CRLF;

szData = System.Text.Encoding.ASCII.GetBytes(Data.ToCharArr ay());

NetStrm.Write(szData,0,szData.Length);

Status.Items.Add(RdStrm.ReadLine());

}

}

else

{

Status.Items.Add(szTemp);

}



//½«¹â±êÖûØÔ­À´µÄ״̬

Cursor.Current = cr;

}



catch(InvalidOperationException err)

{

Status.Items.Add("Error: "+err.ToString());

}

}

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µ½´¦ÎªÖ¹£¬ÎÒÃÇÒѾ­Íê³ÉÁËPO P3Óʼþ½ÓÊÕ³ÌÐòµÄÈ«²¿¹¤×÷ÁË ¡£´ÓÖУ¬ÎÒÃDz»ÄÑ·¢ÏÖÔËÓÃC# Íê³ÉһЩÍøÂçʵÓñà³ÌÊǷdz £ÈÝÒ׵ġ£Ö»ÒªÎÒÃÇÕÆÎÕÁËÆä ÖеÄÔ­Àí£¬¾ßÌåµÄ±à³Ì¹¤×÷¾ ͱäµÃ·Ç³£µÄÇáËɶøÇÒÓÐÌõÀí ¡£¼´Ê¹ÒÔÇ°Äã¶ÔPOP3Óʼþ½ÓÊÕµ ÄʵÏÖÒ»ÎÞËùÖª£¬ÎÒÏëÔÚ¿´Íê ÕâƪÎÄÕºó£¬Äã¶ÔËüÖÁÉÙ»áÓ ÐÁ˸ö´ó¸ÅµÄÁ˽⡣²»¹ý£¬»¹ ÒªÖ¸³öµÄÊÇÕâÖ»ÊÇÒ»¸öºÜ¼òµ ¥µÄʵÀý£¬Èç¹ûÒªÔÚʵ¼ÊÖÐÓ¦ Óã¬Ôò»¹Ðè´ó´óµÄ¸Ä½ø£¬ÓÐÐ ËȤµÄ¶ÁÕß²»·ÁÒ»ÊÔ¡£

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