通过email来更改用户密码

1 //定义JmailCommon一个方法
private void JmailCommon(string Title_, string Body_)
        {
            jmail.MessageClass mail = new jmail.MessageClass();
            DateTime t = DateTime.Now;
            string fromemail = "service@rhyp.net";
            //string fromemail = "794145818@qq.com";
            string toemail = this.txtUserName.Text;
            //标题
            string subject = Title_;
            //内容
            string body = Body_;
            //silent属性：如果设置为true,jmail不会抛出例外错误. jmail. send( () 会根据操作结果返回true或false
            mail.Silent = true;
            //jmail创建的日志，前提loging属性设置为true
            mail.Logging = true;
            //字符集，缺省为"us-ascii"gb2312
            mail.Charset = "UTF-8";
            mail.Encoding = "BASE64";
            //信件的contentype. 缺省是"text/plain"） : 字符串如果你以html格式发送邮件, 改为"text/html"即可。
            mail.ContentType = "text/html";
            //添加收件人
            mail.AddRecipient(toemail, "", "");
            mail.From = fromemail;
            //发件人邮件用户名
            mail.MailServerUserName = "service@rhyp.net";
            //发件人邮件密码
            mail.MailServerPassWord = "jing,.98";
            //设置邮件标题
            mail.Subject = subject;
            //邮件添加附件,(多附件的话，可以再加一条jmail.addattachment("c:\test.jpg",true,null);)就可以搞定了。［注］：加了附件，讲把上面的jmail.contenttype="text/html";删掉。否则会在邮件里出现乱码
            //mail.AddAttachment("c:\test.jpg", true, null);
            //邮件内容
            mail.Body = body + t.ToString();
            //jmail发送的方法
            if (mail.Send("smtp.qq.com", false))
            {
                Response.Write("<script language='javascript'>alert('OK!')</script>");
            }
            else
            {
                Response.Write("<script language='javascript'>alert('False!')</script>");
                Response.Write(mail.ErrorCode.ToString() + "<br/>" + mail.ErrorMessage.ToString() + "<br/>" + mail.ErrorSource.ToString() + "<br/>");
            }
            mail.Close();
        }


2 在 点击btnsave_Click事件执行相关代码
  //查询数据库里的用户名和Email（userinfo）
  //链接中传递两个相同的参数 一个用户名加密一个用户名不加密
   ICommonService comminBLL = new CommonService();
        protected void btnsave_Click(object sender, EventArgs e)
        {
            string username = this.txtUserName.Text.Trim();
            UserInfo userinfo = comminBLL.ADMIN_QueryUserInfo(username);
           string uname=userinfo.NiceName.ToString();
            //加密截取
           string str = FormsAuthentication.HashPasswordForStoringInConfigFile(uname, FormsAuthPasswordFormat.MD5.ToString()).Substring(2, 10);
             if(userinfo.Email.Equals(username))
            {
                string str_ = string.Format(@"亲爱的用户 ：{0}您好！</br>
                                        <p>您收到这封这封电子邮件是因为您 (也可能是某人冒充您的名义) 申请了一个新的密码。假如这不是您本人所申请, 请不用理会这封电子邮件, 但是如果您持续收到这类的信件骚扰, 请您尽快联络管理员。
                                        <p>要使用新的密码, 请使用以下链接启用密码。
                                        <a href='http://localhost:11510/UserSignin/RetrievePassword.aspx?tn={1}&nc={0}'>http://localhost:11510/UserSignin/RetrievePassword.aspx?tn={1}&nc={0}</a></br> (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。该链接使用后将立即失效。)</br>注意:请您在收到邮件1个小时内({2})使用，否则该链接将会失效。"
                                       , uname, str, DateTime.Now);
                 JmailCommon("[润禾友品]找回您的账号密码^", str_);
            }
            else
            {
                Response.Write("<script language='javascript'>alert('False!')</script>");
            }
            
           
        }
   //点击btnUpdate_Click事件执行相关代码
    protected void btnUpdate_Click(object sender, EventArgs e)
        {
            if (this.IsValid)
            {
                //读取从链接传递过来的两个参数的值
                string tn_str = Request.QueryString["tn"];
                string nc_str = Request.QueryString["nc"];
                //给没有加密的那个参数加密
                string str = FormsAuthentication.HashPasswordForStoringInConfigFile(nc_str, FormsAuthPasswordFormat.MD5.ToString()).Substring(2, 10);
             //两个加密后的数据继续比较 返回true 就通过用户名进行更改密码 
              if (tn_str.Equals(str))
                {
                    string passwordnew = this.TxtPasswordNew.Text;
                    passwordnew = FormsAuthentication.HashPasswordForStoringInConfigFile(passwordnew, System.Web.Configuration.FormsAuthPasswordFormat.MD5.ToString());
                    userinfo.Password = passwordnew;
                    bool results = usermemberBLL.UpdateU_Password(nc_str, passwordnew);
                    if (results)
                    {
                        Response.Write("<script language='javascript'>alert('OK!')</script>");


                        //ScriptManager.RegisterStartupScript(UpdatePanel1, UpdatePanel1.GetType(), "", "xalert("恭喜你！密码更改成功！");", true);
                    }
                }


              
            }
        }