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

 

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[i]);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[i];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