ASP.NET(C#) 发送邮件帮助类Mailhelper

using System;
using System.Data;
using System.Configuration;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using System.Net.Mail;

namespace SendMail
{
    /// <summary>
    /// 邮件发送类 
    /// 作者:ken.io
    /// </summary>
    /// PS:如果asp.net使用异步发送，请在发送页面的Page标签中加上 Async="true" 标记。
    public class MailHelper
    {

        /// <summary>
        /// 发送邮件，不使用SSL协议加密
        /// </summary>
        /// <param name="mailTitle">邮件标题</param>
        /// <param name="mailContent">邮件内容</param>
        /// <param name="mailAddress">收件人地址集合</param>
        public void SendMail(string mailTitle, string mailContent, params string[] mailAddress)
        {
            System.Net.Mail.MailMessage msg = new System.Net.Mail.MailMessage();
            //添加收件人
            foreach (string address in mailAddress)
            {
                msg.To.Add(address);
            }
            //设置发件邮箱地址，发件人姓名，以及邮件编码
            msg.From = new MailAddress("yourmail@163.com", "Sender", System.Text.Encoding.UTF8);
            //设置邮件标题
            msg.Subject = mailTitle;
            //设置邮件标题编码 
            msg.SubjectEncoding = System.Text.Encoding.UTF8;
            //设置邮件内容
            msg.Body = mailContent;
            //设置邮件内容编码
            msg.BodyEncoding = System.Text.Encoding.UTF8;
            //指定是否是HTML邮件 
            msg.IsBodyHtml = false;
            //设置邮件优先级 
            msg.Priority = MailPriority.High;

            SmtpClient client = new SmtpClient();
            //设置邮箱账号密码
            client.Credentials = new System.Net.NetworkCredential("yourmail@163.com", "password");
            //设置smtp服务器
            client.Host = "smtp.163.com";
            object userState = msg;
            try
            {
                //异步发送
               client.SendAsync(msg, userState);
                //同步发送
               //client.Send(msg); 
               JScript.Alert("邮件发送成功！");
            }
            catch (System.Net.Mail.SmtpException ex)
            {
                JScript.Alert(ex.Message);
            }
        }

        /// <summary>
        /// 发送邮件，使用SSL协议加密
        /// </summary>
        /// <param name="mailTitle">邮件标题</param>
        /// <param name="mailContent">邮件内容</param>
        /// <param name="mailAddress">收件人地址集合</param>
        public void SendMailSSL(string mailTitle, string mailContent, params string[] mailAddress)
        {
            System.Net.Mail.MailMessage msg = new System.Net.Mail.MailMessage();
            //添加收件人
            foreach (string address in mailAddress)
            {
                msg.To.Add(address);
            }
            //设置发件邮箱地址，发件人姓名，以及邮件编码
            msg.From = new MailAddress("yourmail@163.com", "Sender", System.Text.Encoding.UTF8);
            //设置邮件标题
            msg.Subject = mailTitle;
            //设置邮件标题编码 
            msg.SubjectEncoding = System.Text.Encoding.UTF8;
            //设置邮件内容
            msg.Body = mailContent;
            //设置邮件内容编码
            msg.BodyEncoding = System.Text.Encoding.UTF8;
            //指定是否是HTML邮件 
            msg.IsBodyHtml = false;
            //设置邮件优先级 
            msg.Priority = MailPriority.High;

            SmtpClient client = new SmtpClient();
            //设置邮箱账号密码
            client.Credentials = new System.Net.NetworkCredential("yourmail@163.com", "password");
            //设置邮箱服务器使用的SSL协议端口 -可能个别要见服务器要求设置SSL协议端口
            //client.Port = 25;
            //设置smtp服务器
            client.Host = "smtp.163.com";
            //使用ssl加密 
            client.EnableSsl = true;
            object userState = msg;
            try
            {
                //异步发送
                //client.SendAsync(msg, userState);
                //同步发送
                client.Send(msg); 
                JScript.Alert("邮件发送成功！");
            }
            catch (System.Net.Mail.SmtpException ex)
            {
                JScript.Alert(ex.Message);
            }
        }

        /// <summary>
        /// 本地发送邮件
        /// </summary>
        /// <param name="mailTitle">邮件标题</param>
        /// <param name="mailContent">邮件内容</param>
        /// <param name="mailAddress">收件人地址集合</param>
        public void SendMailLocal(string mailTitle, string mailContent, params string[] mailAddress)
        {
            System.Net.Mail.MailMessage msg = new System.Net.Mail.MailMessage();
            //添加收件人
            foreach (string address in mailAddress)
            {
                msg.To.Add(address);
            }
            //设置发件邮箱地址，发件人姓名，以及邮件编码
            msg.From = new MailAddress("server@local.com", "Sender", System.Text.Encoding.UTF8);
            //设置邮件标题
            msg.Subject = mailTitle;
            //设置邮件标题编码 
            msg.SubjectEncoding = System.Text.Encoding.UTF8;
            //设置邮件内容
            msg.Body = mailContent;
            //设置邮件内容编码
            msg.BodyEncoding = System.Text.Encoding.UTF8;
            //指定是否是HTML邮件 
            msg.IsBodyHtml = false;
            //设置邮件优先级 
            msg.Priority = MailPriority.High;

            SmtpClient client = new SmtpClient();
            //设置smtp服务器地址
            client.Host = "localhost";
            object userState = msg;
            try
            {
                //异步发送
                //client.SendAsync(msg, userState);
                //同步发送
                client.Send(msg); 
                JScript.Alert("邮件发送成功！");
            }
            catch (System.Net.Mail.SmtpException ex)
            {
                JScript.Alert(ex.Message);
            }
        }

    }
}