.net 发送电子邮件

using System;
using System.Collections.Generic;
using System.Text;
using System.Net.Mail;
using System.Net;

namespace LFSYNC
{
class EMail
{
private string _from;
public string From
{
get { return _from; }
set { _from = value; }
}

private string _to;
public string To
{
get { return _to; }
set { _to = value; }
}

private string _subject;
public string Subject
{
get { return _subject; }
set { _subject = value; }
}

private string _body;
public string Body
{
get{return _body;}
set{_body=value;}
}

private string _server;
public string Server
{
get { return _server; }
set { _server = value; }
}

private string _pwd;
public string Pwd
{
get { return _pwd; }
set { _pwd = value; }
}

/// <param name="to">收件人邮件地址</param>
/// <param name="from">发件人邮件地址</param>
/// <param name="subject">邮件主题</param>
/// <param name="body">邮件内容</param>
/// <param name="username">登录smtp主机时用到的用户名,注意是邮件地址'@'以前的部分</param>
/// <param name="password">登录smtp主机时用到的用户密码</param>
/// <param name="smtpHost">发送邮件用到的smtp主机</param>
public EMail(string from, string to, string subject, string body, string server, string pwd)
{
this.From = from;
this.To = to;
this.Subject = subject;
this.Body = body;
this.Server = server;
this.Pwd = pwd;
}

/// <summary>
/// 发送邮件
/// </summary>
public void Send()
{

try
{
MailAddress mailfrom = new MailAddress(this.From);
MailAddress mailto = new MailAddress(this.To);
MailMessage message = new MailMessage(mailfrom, mailto);
message.Subject = this.Subject;//设置邮件主题
message.IsBodyHtml = false;//设置邮件正文为html格式
message.Body = this.Body;//设置邮件内容
SmtpClient client = new SmtpClient(this.Server);
//设置发送邮件身份验证方式
//注意如果发件人地址是abc@def.com，则用户名是abc而不是abc@def.com
client.Credentials = new NetworkCredential(this.From.Split(new char[] { '@' })[0], this.Pwd);
client.Send(message);
}
catch(Exception ex)
{
throw ex;
}
}
}
}