邮件发送类，支持HTML格式，支持优先级设置
作者：blood 出处：开发者俱乐部 邮件发送类，支持HTML格式，支持优先级设置 邮件发送类，支持html格式，支持优先级设置。通过socket类实现的using System;using System.Text;using System.IO;using System.Net;using System.Net.Sockets; namespace Blood.Com.ClassLib{ /// <summary>/// TcpClient派生类，用来进行SMTP服务器的连接工作/// </summary>public class SMTPClient : TcpClient{public bool isConnected(){return Active;} public void SendCommandToServer(string Command){NetworkStream ns = this.GetStream() ;byte[] WriteBuffer ;WriteBuffer = new byte[1024] ;WriteBuffer = Encoding.Default.GetBytes(Command) ;ns.Write(WriteBuffer,0,WriteBuffer.Length);return ;} public string GetServerResponse(){int StreamSize ;string ReturnValue = "" ;byte[] ReadBuffer ;NetworkStream ns = this.GetStream() ;ReadBuffer = new byte[1024] ;StreamSize = ns.Read(ReadBuffer,0,ReadBuffer.Length);if (StreamSize==0){return ReturnValue ;}else{ReturnValue = Encoding.Default.GetString(ReadBuffer);return ReturnValue;} } public bool DoesStringContainSMTPCode(string s,string SMTPCode){return(s.IndexOf(SMTPCode,0,10)==-1)?false:true;} } //结束类 /// <summary>/// 发送邮件类/// </summary>public class SMTPMail{/// <summary>/// 错误反馈信息/// </summary>private string strErrMessage = null; /// <summary>/// SMTP服务器反馈的信息/// </summary>private string strResponse; /// <summary>/// 构造函数/// </summary>public SMTPMail(){strErrMessage = "";strResponse = "";} /// <summary>/// 取得错误反馈信息/// </summary>public string ErrorMessage{get{return strErrMessage ;}} /// <summary>/// 取得SMTP服务器反馈的信息/// </summary>public string ServerResponse{get{return strResponse;}} /// <summary>/// 邮件发送优先级/// </summary>public enum Prioritys{/// <summary>/// 最高级别/// </summary>HIGH = 1,/// <summary>/// 默认级别/// </summary>NORMAL = 3,/// <summary>/// 最低级别/// </summary>LOW = 5} public void SendMail(string SmtpHost,int Port,string From,string DisplayFromName,string To,string DisplayToName,Prioritys Priority,bool Html,string Base,string Subject,string Message){try{string strResponseNumber;SMTPClient smtpcMail = new SMTPClient();smtpcMail.Connect(SmtpHost,Port);bool bolConnect = smtpcMail.isConnected(); //判断是否进行了连接if (!bolConnect){strErrMessage = "Smtp服务器连接失败...";return;} //读取反馈信息strResponseNumber = smtpcMail.GetServerResponse();if (smtpcMail.DoesStringContainSMTPCode(strResponseNumber,"220")){this.strResponse = strResponseNumber;}else{this.strErrMessage = "连接失败" strResponseNumber;return ;} string[] strSendBuffer = new string[6];string[] strResponseCode = {"220","250","251","354","221"}; // success codes from SMTP server string strData = "";strData = string.Concat("HELO ",SmtpHost);strData = string.Concat(strData,"\r\n");strSendBuffer[0] = strData ; strdata = "";strData = string.Concat("MAIL FROM: ","<" From ">");strData = string.Concat(strData,"\r\n");strSendBuffer[1] = strData; strdata = "";strData = string.Concat("RCPT TO: ","<" To ">");strData = string.Concat(strData,"\r\n");strSendBuffer[2] = strData; strdata = "" ;strData = string.Concat("DATA","\r\n");strSendBuffer[3] = strData ; strdata = "" ;strData = string.Concat("From: ",DisplayFromName "<" From ">");strData = string.Concat(strData,"\r\n" );strData = string.Concat(strData,"To: " );strData = string.Concat(strData,DisplayToName "<" To ">");strData = string.Concat(strData,"\r\n" );strData = string.Concat(strData,"Subject: " );strData = string.Concat(strData,Subject);strData = string.Concat(strData,"\r\n");strData = string.Concat(strData,"MIME-Version: 1.0" );strData = string.Concat(strData,"\r\n");strData = string.Concat(strData,"X-Priority: " Priority);strData = string.Concat(strData,"\r\n");strData = string.Concat(strData,"X-MSMail-Priority: " Priority);strData = string.Concat(strData,"\r\n");if(Html == true){strData = string.Concat(strData,"Content-Type: text/html;" );}else{strData = string.Concat(strData,"Content-Type: text/plain;" );}strData = string.Concat(strData,"\r\n");strData = string.Concat(strData,"charset=\"iso-8859-1\"" );strData = string.Concat(strData,"\r\n");if(Html == true){strData = string.Concat(strData,"Content-Transfer-Encoding: text/html;" );}else{strData = string.Concat(strData,"Content-Transfer-Encoding: text/plain;" );}strData = string.Concat(strData,"\r\n");strData = string.Concat(strData,"Content-Base: \"" Base "\"" );strData = string.Concat(strData,"\r\n" "\r\n"); strdata = string.Concat(strData,Message);strData = string.Concat(strData,"\r\n.\r\n");strSendBuffer[4] = strData; strdata = "" ;strData = string.Concat(strData,"QUIT\r\n");strSendBuffer[5] = strData; int i = 0 ; while(i < strSendBuffer.Length){smtpcMail.SendCommandToServer(strSendBuffer
);strResponseNumber = smtpcMail.GetServerResponse(); for(int j=0;j<strResponseCode.Length;j ){if (smtpcMail.DoesStringContainSMTPCode(strResponseNumber,strResponseCode[j])){this.strResponse = strResponseNumber;this.strResponse = "<br>";break;}else{if(j==strResponseCode.Length-1){this.strErrMessage = strResponseNumber;this.strErrMessage = strSendBuffer;return;}}} i ;} // 结束循环}catch(SocketException err){this.strErrMessage = err.Message " " err.StackTrace;}catch(Exception e){this.strErrMessage = e.Message " " e.StackTrace;}} //结束邮件发送方法 } // 结束类 } // 结束Namespace (2005-10-03:02:26)
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