ASP.NET注册时使用邮箱激活验证

激活验证主要实现的功能是：

当用户在注册页面注册数据时，向用户注册的邮箱发送一条激活链接，当用户点击此链接时用户注册的账号才能被激活，否则的话即使在登陆界面输入正确的用户名和密码也不能登陆。

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Data;

using System.Data.SqlClient;

using System.Configuration;

using System.Net;

using System.Net.Mail;

namespace ValidateEmail

{

    public partial class WebForm1 : System.Web.UI.Page

    {

        string sqlstr=ConfigurationManager.ConnectionStrings["sqlstr"].ConnectionString;

        protected void Page_Load(object sender, EventArgs e)

        {

        }

        protected void btnLogon_Click(object sender, EventArgs e)

        {

            using (SqlConnection sqlcnn=new SqlConnection(sqlstr))

            {

                using (SqlCommand sqlcmm=sqlcnn.CreateCommand())

                {

                    sqlcmm.CommandText = "insert into T_mail(id,username,userpas,mail)values(@id,@username,@userpas,@mail)";

                    sqlcmm.Parameters.AddWithValue("@id",System.Guid.NewGuid());//向数据库中插入GUID

                    sqlcmm.Parameters.AddWithValue("@username",this.txtUerName.Text);

                    sqlcmm.Parameters.AddWithValue("@userpas",this.txtPassword.Text);

                    sqlcmm.Parameters.AddWithValue("@mail",this.txtMail.Text);

                    sqlcnn.Open();

                    int i = sqlcmm.ExecuteNonQuery();

                    if (i > 0)

                    {

                        SendMail();

                        Response.Write("<script>alert('注册成功,请去您的邮箱进行激活！')</script>");

                    }

                    else

                    {

                        Response.Write("<script>alert('注册失败！')</script>");

                    }

                }

            }

        }

        private void SendMail()

        {

            MailMessage msg = new MailMessage();

            msg.From = new MailAddress("1607977350@qq.com");   //发件人的邮箱地址

            msg.Subject = "*欢迎您的注册*";  //邮件主题

            msg.Body = "<a href='http://localhost:38966/WebForm2.aspx?name="+this.txtUerName.Text+"'>点击激活您的账号</a>";//邮件正文

            msg.To.Add(this.txtMail.Text);

            msg.IsBodyHtml = true;  //邮件正文是否支持html的值

            SmtpClient sc = new SmtpClient();

            sc.Host = "smtp.qq.com";

            sc.Port = 25;

            NetworkCredential nc = new NetworkCredential("1607977350", "********");  //验证凭据 1607977350：是邮箱账号，********：是邮箱密码

            sc.Credentials = nc;

            sc.Send(msg);

        }

    }

}