ASP.NET结合数据库，发送邮件找回密码

 

 

using System; using System.Data; using System.Configuration; using System.Collections; using System.Web; using System.Web.Security; using System.Web.UI; using System.Web.UI.WebControls; using System.Web.UI.WebControls.WebParts; using System.Web.UI.HtmlControls; using System.Data.SqlClient; using System.Net.Mail; public partial class Default6 : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { if (!IsPostBack) { MultiView1.ActiveViewIndex = 0; } } protected void Button1_Click(object sender, EventArgs e) { string name = TextBox2.Text.ToString(); string sql = "select count(*) from Usermember where username='" + name + "'"; int n=SqlDb.ExecScalar(sql); if(n>0) { MultiView1.ActiveViewIndex=1; string sql1 = "select pwdanswer,pwdquestion from Usermember where username='" + name + "'"; SqlDataReader dr = SqlDb.GetReader(sql1); while (dr.Read()) { TextBox3.Text = dr["pwdquestion"].ToString(); } dr.Dispose(); } else { MultiView1.ActiveViewIndex = 0; Response.Write("<script>alert('无此用户名');history.back();</script>"); } } protected void Button2_Click(object sender, EventArgs e) { TextBox txt = new TextBox(); string an=""; string email = ""; string pwd = ""; Random pwd1 = new Random(); pwd = pwd1.Next(100000, 9999999).ToString(); txt.Text = pwd; string name = TextBox2.Text.ToString(); string sql = "select pwdanswer,pwdquestion,user_email,userpwd from Usermember where username='" + name + "'"; SqlDataReader dr = SqlDb.GetReader(sql); while (dr.Read()) { an = dr["pwdanswer"].ToString(); email = dr["user_email"].ToString(); //pwd = dr["userpwd"].ToString(); } if (TextBox4.Text == an) { string sql2 = "update Usermember set userpwd='" + SqlDb.MD5(txt) + "' where username='" + name + "'"; SqlDb.ExecSql(sql2); MailAddress add=new MailAddress("[email protected]"); if (Send(add, email, "找回密码", pwd+" 请用此密码登录并及时修改您的密码！谢谢...")) { Response.Write("<script>alert('回答正确，一封邮件已发送到你的邮箱，请查 收！');location.href='" + Request.Url + "';</script>"); } else { Response.Write("<script>alert('发送失败');JavaScript:history.back();</script>"); } } else { Response.Write("<script>alert('回答错误');JavaScript:history.back();</script>"); }     } /// <summary> /// 发送电子邮件 /// </summary> /// <param name="MessageFrom">发件人邮箱地址 </param> /// <param name="MessageTo">收件人邮箱地址 </param> /// <param name="MessageSubject">邮件主题 </param> /// <param name="MessageBody">邮件内容 </param> /// <returns> </returns> public static bool Send(MailAddress MessageFrom, string MessageTo, string MessageSubject, string MessageBody) { MailMessage message = new MailMessage();         message.From = MessageFrom; message.To.Add(MessageTo);              //收件人邮箱地址可以是多个以实现群发 message.Subject = MessageSubject; message.Body = MessageBody; message.IsBodyHtml = true;              //是否为html格式 message.Priority = MailPriority.High;   //发送邮件的优先等级         SmtpClient sc = new SmtpClient(); sc.Host = "smtp.163.com";              //指定发送邮件的服务器地址或IP sc.Port = 25;                           //指定发送邮件端口 sc.Credentials = new System.Net.NetworkCredential("[email protected]", "XXX"); //指定登录服务器的用户名和密码 try { sc.Send(message);       //发送邮件 } catch (SmtpException ex) { //return ex.Message; } return true;