C# Email邮件发送功能 找回或重置密码功能

using System;
using System.Collections.Generic;
using System.Configuration;
using System.IO;
using System.Linq;
using System.Net.Mail;
using System.Text;
using System.Web;
 
namespace CalslNum.Helper
{
 /// <summary>
 ///发送邮件类
 /// </summary>
 public class MailService
 {
  /// <summary> 
  /// 发送邮件程序调用方法 SendMail("abc@126.com", "某某人", "cba@126.com", "你好", "我测试下邮件", "邮箱登录名", "邮箱密码", "smtp.126.com", true,); 
  /// </summary> 
  /// <param name="from">发送人邮件地址</param> 
  /// <param name="fromname">发送人显示名称</param> 
  /// <param name="to">发送给谁（邮件地址）</param> 
  /// <param name="subject">标题</param> 
  /// <param name="body">内容</param> 
  /// <param name="username">邮件登录名</param> 
  /// <param name="password">邮件密码</param> 
  /// <param name="server">邮件服务器 smtp服务器地址</param> 
  /// <param name= "IsHtml "> 是否是HTML格式的邮件 </param> 
  /// <returns>send ok</returns> 
  public static bool SendMail(string from, string fromname, string to, string subject, string body, string server, string username, string password, bool IsHtml)
  {
   //邮件发送类 
   MailMessage mail = new MailMessage();
   try
   {
    //是谁发送的邮件 
    mail.From = new MailAddress(from, fromname);
    //发送给谁 
    mail.To.Add(to);
    //标题 
    mail.Subject = subject;
    //内容编码 
    mail.BodyEncoding = Encoding.Default;
    //发送优先级 
    mail.Priority = MailPriority.High;
    //邮件内容 
    mail.Body = body;
    //是否HTML形式发送 
    mail.IsBodyHtml = IsHtml;
    //邮件服务器和端口 
    SmtpClient smtp = new SmtpClient(server, 25);
    smtp.UseDefaultCredentials = true;
    //指定发送方式 
    smtp.DeliveryMethod = SmtpDeliveryMethod.Network;
    //发件人身份验证,否则163 发不了 
    smtp.UseDefaultCredentials = true;
    //指定登录名和密码 
    smtp.Credentials = new System.Net.NetworkCredential(username, password);
    //超时时间 
    smtp.EnableSsl = false;
    smtp.Timeout = 10000;
    smtp.Send(mail);
    return true;
   }
   catch (Exception)
   {
    return false;
   }
   finally
   {
    mail.Dispose();
   }
  }
 
  //读取指定URL地址的HTML，用来以后发送网页用 
  public static string ScreenScrapeHtml(string url)
  {
   //读取stream并且对于中文页面防止乱码 
   StreamReader reader = new StreamReader(System.Net.WebRequest.Create(url).GetResponse().GetResponseStream(), System.Text.Encoding.UTF8);
   string str = reader.ReadToEnd();
   reader.Close();
   return str;
  }
 
  //发送plaintxt 
  public static bool SendText(string from, string fromname, string to, string subject, string body, string server, string username, string password)
  {
   return SendMail(from, fromname, to, subject, body, server, username, password, false);
  }
 
  //发送HTML内容 
  public static bool SendHtml(string from, string fromname, string to, string subject, string body, string server, string username, string password)
  {
   return SendMail(from, fromname, to, subject, body, server, username, password, true);
  }
 
  //发送制定网页 
  public static bool SendWebUrl(string from, string fromname, string to, string subject, string server, string username, string password, string url)
  {
   //发送制定网页 
   return SendHtml(from, fromname, to, subject, ScreenScrapeHtml(url), server, username, password);
 
  }
  //默认发送格式 
  public static bool SendEmailDefault(string ToEmail,string f_username,string f_pass,string f_times)
  {
   StringBuilder MailContent = new StringBuilder();
   MailContent.Append("亲爱的×××会员：<br/>");
   MailContent.Append(" 您好！你于");
   MailContent.Append(DateTime.Now.ToString("yyyy-MM-dd HH:MM:ss"));
   MailContent.Append("通过<a href='#'>×××</a>管理中心审请找回密码。<br/>");
   MailContent.Append("　　　为了安全起见，请用户点击以下链接重设个人密码：<br/><br/>");
   string url = "http://www.×××.×××/SignIn/Rest?u=" + f_username + "&s=" + f_pass + "&t=" + f_times; 114 MailContent.Append("<a href='" + url + "'>" + url + "</a><br/><br/>"); 115 MailContent.Append(" (如果无法点击该URL链接地址，请将它复制并粘帖到浏览器的地址输入框，然后单击回车即可。)"); 116 return SendHtml(ConfigurationManager.AppSettings["EmailName"].ToString(), "会员管理中心", ToEmail, "×××找回密码", MailContent.ToString(), ConfigurationManager.AppSettings["EmailService"].ToString(), ConfigurationManager.AppSettings["EmailName"].ToString(), ConfigurationManager.AppSettings["EmailPass"].ToString()); //这是从webconfig中自己配置的。 117 } 118 } 119 }

<add key="EmailName" value="××××@163.com"/>
<add key="EmailPass" value="××××"/>
<add key="EmailService" value="smtp.163.com"/>

 public ActionResult SendEmail(string EmailName)
  {
   EmailName = Helper.FI_DesTools.DesDecrypt(EmailName);
   if (!Regex.IsMatch(EmailName, @"\w+([-+.']\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*"))
   {
    return Content("0");
   }
   string f_username = "";
   string f_pass = "";
   string f_times = Helper.FI_DesTools.DesEncrypt(DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss"));
   List<user> list = (from a in users where a.emailaddress == EmailName select a).ToList();
   if (list.Count > 0)
   {    
    f_username = Helper.FI_DesTools.DesEncrypt(list[0].×××);
    f_pass = Helper.FI_DesTools.DesEncrypt(list[0].×××);
 
    bool flag = Helper.MailService.SendEmailDefault(EmailName, “×××”,“×××”, “×××”); //这里面的参数根据自己需求自己定，最好进行加密
    if (flag)
    {
     return Content("true");
    }
    else
    {
     return Content("false");
    }
   }
   else {
    return Content("false");
   }
  }