| ASP.NET读取POP3邮件的操作__教程 |
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| 日期：2007-5-20 1:19:10 人气：65 [大 中 小] |
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//from the article "Retrieve Mail From a POP3 Server Using C#" at
//www.codeproject.com by Agus Kurniawan
//http://www.codeproject.com/csharp/popapp.asp
string temp;
try
{
temp = RdStrm.ReadLine();
was_pop_error(temp);
return(temp);
}
catch(InvalidOperationException err)
{
return("Error in read_single_line_response(): " + err.ToString ()) ;
}
}
private string read_multi_line_response()
{
//read the response of the pop server. This code snipped "borrowed"
//with some modifications...
//from the article "Retrieve Mail From a POP3 Server Using C#" at
//www.codeproject.com by Agus Kurniawan
//http://www.codeproject.com/csharp/popapp.asp
string temp="";
string szTemp;
try
{
szTemp = RdStrm.ReadLine();
was_pop_error(szTemp);
if(!error)
{
while(szTemp!=".")
{
temp += szTemp+CRLF;
szTemp = RdStrm.ReadLine();
}
}
else
{
temp=szTemp;
}
return(temp);
}
catch(InvalidOperationException err)
{
return("Error in read_multi_line_response(): " + err.ToString ());
}
}
private void was_pop_error(string response)
{
//detect if the pop server that issued the response believes that
//an error has occured.
if(response.StartsWith ("-"))
{
//if the first character of the response is "-" then the
//pop server has encountered an error executing the last
//command send by the client
error=true;
}
else
{
//success
error=false;
}
}
#endregion
#region POP commands
public string DELE(int msg_number)
{
string temp;
if (state != connect_state.TRANSACTION )
{
//DELE is only valid when the pop session is in the TRANSACTION STATE
temp="Connection state not = TRANSACTION";
}
else
{
issue_command("DELE " + msg_number.ToString ());
temp=read_single_line_response();
}
return(temp);
}
public string LIST()
{
string temp="";
if (state != connect_state.TRANSACTION )
{
//the pop command LIST is only valid in the TRANSACTION state
temp="Connection state not = TRANSACTION";
}
else
{
issue_command ("LIST");
temp=read_multi_line_response();
}
return(temp);
}
public string LIST(int msg_number)
{
string temp="";
if (state != connect_state.TRANSACTION )
{
//the pop command LIST is only valid in the TRANSACTION state
temp="Connection state not = TRANSACTION";
}
else
{
issue_command ("LIST " + msg_number.ToString ());
temp=read_single_line_response(); //when the message number is supplied, expect a single line response
}
return(temp);
}
public string NOOP()
{
string temp;
if (state != connect_state.TRANSACTION )
{
//the pop command NOOP is only valid in the TRANSACTION state
temp="Connection state not = TRANSACTION"; |
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| 出处：本站原创 作者：佚名 |
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