利用 System.Net.Mail 实现邮件发送功能

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Data;
using SXT.Data;
using System.Net.Mail;
using System.ComponentModel; 

namespace SXT.MSS.Winservice
{
    /// <summary>
    /// 邮件操作类
    /// </summary>
    public class SmtpMailService
    {
        #region 属性
        //SMTP服务器
        protected SmtpClient MySmtpClient { get; set; }
        #endregion

        #region
        /// <summary>
        /// 构造函数
        /// </summary>
        public SmtpMailService()
        {
            MySmtpClient = null;
        }

        /// <summary>
        /// 构造函数
        /// </summary>
        /// <param name="host">服务器</param>
        /// <param name="userName">用户名</param>
        /// <param name="password">密码</param>
        /// <param name="port">端口</param>
        public SmtpMailService(string host, string userName, string password, int port)
        {
            MySmtpClient = new SmtpClient(host);
            MySmtpClient.Credentials = new System.Net.NetworkCredential(userName, password);
            MySmtpClient.DeliveryMethod = SmtpDeliveryMethod.Network;
            MySmtpClient.Port = port;
        }
        #endregion

        #region 功能函数
        /// <summary>
        /// 创建邮件服务客户端
        /// </summary>
        /// <param name="host">服务器</param>
        /// <param name="userName">用户名</param>
        /// <param name="password">密码</param>
        /// <param name="port">端口</param>
        /// <returns></returns>
        public bool CreateClient(string host, string userName, string password, int port)
        {
            try
            {
                MySmtpClient = new SmtpClient(host);
                MySmtpClient.Credentials = new System.Net.NetworkCredential(userName, password);
                MySmtpClient.DeliveryMethod = SmtpDeliveryMethod.Network;
                MySmtpClient.Port = port;
                return true;
            }
            catch (Exception ex)
            {
                return false;
            }
        }

        /// <summary>
        /// 发送邮件
        /// </summary> 
        /// <param name="smtpPort">服务器端口</param>
        /// <param name="formEmale">发信人地址</param>
        /// <param name="loginID">发信人邮件帐号</param>
        /// <param name="pwd">帐号密码</param>
        /// <param name="title">邮件标题</param>
        /// <param name="content">邮件内容</param>
        /// <param name="toEmale">收件人</param>
        /// <returns></returns>
        public bool SendMail(string formEmale, string title, string content, string toEmal)
        {
            if (MySmtpClient == null)
                return false;

            MailMessage myMail = new MailMessage();
            myMail = new MailMessage();
            myMail.From = new MailAddress(formEmale);
            myMail.To.Add(new MailAddress(toEmal));
            myMail.Subject = title;
            myMail.Body = content;
            myMail.IsBodyHtml = false;
            myMail.Priority = MailPriority.Normal;
            MySmtpClient.Send(myMail);
            return true;
        }
        #endregion