发送附件邮件

string MailFrom = "******";
string MailPWD = "*****";
string MailFName = "******";
string MailTo = "****";
string MailCc = "****";
string MailSubject = "邮件激活";
string MailContent = "在返回给拟稿人的时候，只要你把拟稿人的部门id去掉就会问题再现了。G_pnodes";
string Mailattachment = "C:\\Documents and Settings\\Administrator\\桌面\\NET资料\\TabPublc\\TabPublc\\OnLoad\\demo要求.docx";

if (EmailClass.EmailClass.SendEmail(MailFrom, MailPWD, MailFName, MailTo, MailSubject, MailContent, Mailattachment, MailCc))
{

}

　　　　/// <summary>
/// 发送邮件
/// </summary>
/// <param name="mailFrom">登陆用户名</param>
/// <param name="mailPWD">登陆密码</param>
/// <param name="mailFName">发送者用户名</param>
/// <param name="mailTo">接收邮件的地址</param>
/// <param name="mailSubject">邮箱标题</param>
/// <param name="mailContent">邮箱内容</param>
/// <param name="mailAttachment">附件路径，多附件路径中间必须用","隔开</param>
/// <param name="mailCc">抄送的邮箱地址，多接收地址中间必须用","隔开</param>
/// <returns>返回发送邮箱的结果</returns>
public static bool SendEmail(string mailFrom, string mailPWD, string mailFName, string mailTo, string mailSubject, string mailContent, string mailAttachment = "", string mailCc = "")
{
// 设置发送方的邮件信息,例如使用网易的smtp
//string mailFrom = "fjptwwf@163.com"; //登陆用户名
//string mailPWD = "**18";//授权密码   163邮箱必须用授权密码

#region SMTP服务器
string _smtp=mailFrom.Split('@')[1].Split('.')[0].ToUpper();
switch (_smtp)
{
case "QQ"://QQ邮箱
_smtp = "smtp.qq.com";
break;
case "163"://网易163邮箱
_smtp = "smtp.163.com";
break;
case "SINA"://新浪邮箱
_smtp = "smtp.sina.com.cn";
break;
case "SOHU"://搜狐邮箱
_smtp = "smtp.sohu.com";
break;
case "126"://126邮箱
_smtp = "smtp.126.com";
break;
case "188"://188邮箱
_smtp = "smtp.188.com";
break;
}
#endregion

// 邮件服务设置
SmtpClient smtpClient=new SmtpClient();
smtpClient.DeliveryMethod = SmtpDeliveryMethod.Network;//指定电子邮件发送方式
smtpClient.Host = _smtp; //指定SMTP服务器
smtpClient.Credentials = new System.Net.NetworkCredential(mailFrom, mailPWD);//用户名和密码
smtpClient.EnableSsl = true;

// 发送邮件设置
MailMessage mailMessage = new MailMessage();
mailMessage.From = new MailAddress(mailFrom, mailFName);
mailMessage.To.Add(mailTo);//收件人地址，多接收地址中间必须用","隔开
mailMessage.Subject = mailSubject;//主题
mailMessage.Body = mailContent;//内容
mailMessage.CC.Add(new MailAddress(mailCc)); //抄送邮箱地址，多接收地址中间必须用","隔开
mailMessage.BodyEncoding = System.Text.Encoding.UTF8;//正文编码
//mailMessage.BodyEncoding = System.Text.Encoding.GetEncoding("gb2312");
mailMessage.IsBodyHtml = true;//设置为HTML格式
mailMessage.Priority = MailPriority.Normal;//优先级

if (mailAttachment != "")
mailMessage.Attachments.Add(new Attachment(mailAttachment));
try
{
smtpClient.Send(mailMessage); // 发送邮件
return true;
}
catch (SmtpException ex)
{
return false;
}
}