MailMessage邮箱发送

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

 public class SendMailMessage
    {
        /// <summary>
        /// 发送邮箱
        /// </summary>
        /// <param name="toMail">目的邮件地址</param>
        /// <param name="title">发送邮件的标题</param>
        /// <param name="content">发送邮件的内容</param>
        /// <returns></returns>
        public string SendMail(string toMail, string title, string content)
        {
            string fromMail = "你的邮箱@qq.com";
            string fromPassword = "密码";
            System.Net.Mail.SmtpClient client = new SmtpClient();
            client.Host = "smtp.qq.com";
            client.UseDefaultCredentials = false;
            client.Credentials = new System.Net.NetworkCredential(fromMail, fromPassword);
            client.DeliveryMethod = SmtpDeliveryMethod.Network;

            System.Net.Mail.MailMessage message = new MailMessage(fromMail, toMail);
            message.Subject = title;
            message.Body = content;
            message.SubjectEncoding = Encoding.UTF8;
            message.BodyEncoding = Encoding.UTF8;
            message.IsBodyHtml = true;
            ////添加附件
            //Attachment data = new Attachment(@"附件地址如：f:\QQ2011.exe", System.Net.Mime.MediaTypeNames.Application.Octet);
            //message.Attachments.Add(data);
            //client.SendCompleted += new SendCompletedEventHandler(client_SendCompleted);
            //client.SendAsync(mailMessage, mailMessage.To); //异步发送 （异步发送时页面上要加上Async="true" ）
            try
            {
                client.Send(message);
                return "发送邮箱成功!";
            }
            catch (Exception ex)
            {
                return "发送邮箱失败!";
            }
        }
        void client_SendCompleted(object sender, System.ComponentModel.AsyncCompletedEventArgs e)
        {

            if (e.Cancelled)
            {
                System.Web.HttpContext.Current.Response.Write("<script>alert('发送邮箱已被取消!');</script>");
            }
            if (e.Error == null)
            {
                System.Web.HttpContext.Current.Response.Write("<script>alert('发送邮箱成功！');</script>");
            }
            else
            {
                System.Web.HttpContext.Current.Response.Write("<script>alert('发送邮箱失败,错误信息：" + e.Error.Message + "');</script>");
            }

        }


    }