WinForm窗体代码如下：
<span style="font-size:14px;">using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
<span style="color:#ff0000;">//要添加的引用如下</span>
using System.Net.Mail;
using System.Net.Mime;
using System.Timers;
using System.IO;
namespace NovelCS {
public partial class Form3 : Form {
public Form3() {
InitializeComponent();
}
private void Form3_Load(object sender, EventArgs e) {
//一些常见的发送邮件服务器地址 一般都是 stmp.**.com **=qq 或 126 或163 或 gmail 有例外的，具体问度娘
string senderServerIp = "smtp.qq.com";
string toMailAddress = "1449740504@qq.com";
string fromMailAddress = "1449740504@qq.com";
string subjectInfo = "My First Email";
string bodyInfo =@"Hello Jackerson, \r\n
This is my first testing e_mail.But what all thess is from an author named Eric Sun.
Thank you,Eric Sun.";
string mailUsername = "1449740504";
string mailPassword = "******"; //发送人邮箱的密码
string mailPort = "25"; //邮箱端口号
string attachPath = "D:\\jsj.txt; D:\\jsj2.txt";//附件本地地址
MyEmail email = new MyEmail(senderServerIp, toMailAddress, fromMailAddress, subjectInfo, bodyInfo, mailUsername, mailPassword, mailPort, false, false);
email.AddAttachments(attachPath);
email.Send();
}
}
public class MyEmail {
private MailMessage me;//主要处理发送邮件的内容，例：收发件人地址、标题、主体、图片
private SmtpClient sc; //主要处理用smtp发送邮件的配置信息，例：发送邮件服务器地址、发送端口号、验证方式
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 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 string mSenderPassword; //发件箱的密码
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>
/// <strong><span style="color:#ff0000;">构造函数</span></strong>
///</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 toMailAddress, string fromMailAddress, string emailTitle, string emailBody, string username, string password, string port, bool sslEnable, bool pwdCheckEnable) {
try {
me = new MailMessage();
me.To.Add(toMailAddress);
me.From = new MailAddress(fromMailAddress);
me.Subject = emailTitle;
me.Body = emailBody;
me.IsBodyHtml = true;
me.BodyEncoding = System.Text.Encoding.UTF8;
me.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) {
MessageBox.Show(ex.ToString());
}
}
///<summary>
/// <strong><span style="color:#ff0000;">添加附件</span></strong>
///</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]);
me.Attachments.Add(data);
}
} catch (Exception ex) {
MessageBox.Show(ex.ToString());
}
}
///<summary>
/// <strong><span style="color:#ff0000;">邮件的发送</span></strong>
///</summary>
public void Send() {
try {
if (me != null) {
sc = new SmtpClient();
//mSmtpClient.Host = "smtp." + mMailMessage.From.Host;
sc.Host = this.mSenderServerHost;
sc.Port = this.mSenderPort;
sc.UseDefaultCredentials = false;
sc.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 Express
sc.Credentials = nc.GetCredential(sc.Host, sc.Port, "NTLM");
} else {
sc.Credentials = new System.Net.NetworkCredential(this.mSenderUserName, this.mSenderPassword);
}
sc.DeliveryMethod = System.Net.Mail.SmtpDeliveryMethod.Network;
sc.Send(me);
}
} catch (Exception ex) {
Console.WriteLine(ex.ToString());
}
}
}
}</span>
备注：
(1)经过测试，确实可以使用。
(2)本文出处：Eric Sun(http://www.cnblogs.com/mingmingruyuedlut/archive/2011/10/14/2212255.html)