Ø  发送邮件所用的核心知识点

• 微软封装好的MailMessage类：主要处理发送邮件的内容（如：收发人地址、标题、主体、图片等等）
• 微软封装好的SmtpClient类：主要处理用smtp方式发送此邮件的配置信息（如：邮件服务器、发送端口号、验证方式等等）
• SmtpClient主要进行了三层的封装：Socket --> TcpClient --> SmtpClient

Ø  具体代码请看如下所示：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Net.Mail;
using System.Net.Mime;
using System.IO;
using System.Timers;
using System.Xml;namespace MyEmailTest
{class Program{static void Main(string[] args){try{//smtp.163.comstring senderServerIp = "123.125.50.133";//smtp.gmail.com//string senderServerIp = "74.125.127.109";//smtp.qq.com//string senderServerIp = "58.251.149.147";//string senderServerIp = "smtp.sina.com";string toMailAddress = "mingmingruyuedlut@163.com";string fromMailAddress = "mingmingruyuedlut@163.com";string subjectInfo = "Test sending e_mail";string bodyInfo = "Hello Eric, This is my first testing e_mail";string mailUsername = "mingmingruyuedlut"; string mailPassword = ".........."; //发送邮箱的密码（）string mailPort = "25";string attachPath = "E:\\123123.txt; E:\\haha.pdf";MyEmail email = new MyEmail(senderServerIp, toMailAddress, fromMailAddress, subjectInfo, bodyInfo, mailUsername, mailPassword, mailPort, false, false);email.AddAttachments(attachPath);email.Send();}catch (Exception ex){Console.WriteLine(ex.ToString());}}}public class MyEmail{private MailMessage mMailMessage;   //主要处理发送邮件的内容（如：收发人地址、标题、主体、图片等等）private SmtpClient mSmtpClient; //主要处理用smtp方式发送此邮件的配置信息（如：邮件服务器、发送端口号、验证方式等等）private int mSenderPort;   //发送邮件所用的端口号（htmp协议默认为25）private string mSenderServerHost;    //发件箱的邮件服务器地址（IP形式或字符串形式均可）private string mSenderPassword;    //发件箱的密码private string mSenderUsername;   //发件箱的用户名（即@符号前面的字符串，例如：hello@163.com，用户名为：hello）private bool mEnableSsl;    //是否对邮件内容进行socket层加密传输private bool mEnablePwdAuthentication;  //是否对发件人邮箱进行密码验证///<summary>/// 构造函数///</summary>///<param name="server">发件箱的邮件服务器地址</param>///<param name="toMail">收件人地址（可以是多个收件人，程序中是以“;"进行区分的）</param>///<param name="fromMail">发件人地址</param>///<param name="subject">邮件标题</param>///<param name="emailBody">邮件内容（可以以html格式进行设计）</param>///<param name="username">发件箱的用户名（即@符号前面的字符串，例如：hello@163.com，用户名为：hello）</param>///<param name="password">发件人邮箱密码</param>///<param name="port">发送邮件所用的端口号（htmp协议默认为25）</param>///<param name="sslEnable">true表示对邮件内容进行socket层加密传输，false表示不加密</param>///<param name="pwdCheckEnable">true表示对发件人邮箱进行密码验证，false表示不对发件人邮箱进行密码验证</param>public MyEmail(string server, string toMail, string fromMail, string subject, string emailBody, string username, string password, string port, bool sslEnable, bool pwdCheckEnable){try{mMailMessage = new MailMessage();mMailMessage.To.Add(toMail);mMailMessage.From = new MailAddress(fromMail);mMailMessage.Subject = subject;mMailMessage.Body = emailBody;mMailMessage.IsBodyHtml = true;mMailMessage.BodyEncoding = System.Text.Encoding.UTF8;mMailMessage.Priority = MailPriority.Normal;this.mSenderServerHost = server;this.mSenderUsername = username;this.mSenderPassword = password;this.mSenderPort = Convert.ToInt32(port);this.mEnableSsl = sslEnable;this.mEnablePwdAuthentication = pwdCheckEnable;}catch (Exception ex){Console.WriteLine(ex.ToString());}}///<summary>/// 添加附件///</summary>///<param name="attachmentsPath">附件的路径集合，以分号分隔</param>public void AddAttachments(string attachmentsPath){try{string[] path = attachmentsPath.Split(';'); //以什么符号分隔可以自定义Attachment data;ContentDisposition disposition;for (int i = 0; i < path.Length; i++){data = new Attachment(path[i], MediaTypeNames.Application.Octet);disposition = data.ContentDisposition;disposition.CreationDate = File.GetCreationTime(path[i]);disposition.ModificationDate = File.GetLastWriteTime(path[i]);disposition.ReadDate = File.GetLastAccessTime(path[i]);mMailMessage.Attachments.Add(data);}}catch (Exception ex){Console.WriteLine(ex.ToString());}}///<summary>/// 邮件的发送///</summary>public void Send(){try{if (mMailMessage != null){mSmtpClient = new SmtpClient();//mSmtpClient.Host = "smtp." + mMailMessage.From.Host;mSmtpClient.Host = this.mSenderServerHost;mSmtpClient.Port = this.mSenderPort;mSmtpClient.UseDefaultCredentials = false;mSmtpClient.EnableSsl = this.mEnableSsl;if (this.mEnablePwdAuthentication){System.Net.NetworkCredential nc = new System.Net.NetworkCredential(this.mSenderUsername, this.mSenderPassword);//mSmtpClient.Credentials = new System.Net.NetworkCredential(this.mSenderUsername, this.mSenderPassword);//NTLM: Secure Password Authentication in Microsoft Outlook ExpressmSmtpClient.Credentials = nc.GetCredential(mSmtpClient.Host, mSmtpClient.Port, "NTLM");}else{mSmtpClient.Credentials = new System.Net.NetworkCredential(this.mSenderUsername, this.mSenderPassword);}mSmtpClient.DeliveryMethod = System.Net.Mail.SmtpDeliveryMethod.Network;mSmtpClient.Send(mMailMessage);}}catch (Exception ex){Console.WriteLine(ex.ToString());}}}
}