Essay/CodeForget.aspx.cs

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data.SqlClient;
using System.Data;

namespace Essay
{
    public partial class CodeForget : System.Web.UI.Page
    {
        public string sql = "Data Source=. ;Trusted_Connection=SSPI;Initial Catalog=Essay";
        protected void Page_Load(object sender, EventArgs e)
        {

        }
        /// <summary>
        /// 获取验证码
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        protected void btnCode_Click(object sender, EventArgs e)
        {
            string stdnum = this.TStdNum.Text.Trim();
            SqlConnection conn = new SqlConnection(sql);
            SqlCommand cmd = new SqlCommand();
            cmd.Connection = conn;
            conn.Open();
            cmd.CommandType = CommandType.Text;
            cmd.CommandText = "select StdNum,Password,Code from Authors where StdNum='"+stdnum+"'";
            SqlDataReader dr = cmd.ExecuteReader();
            dr.Read();
            string password = dr["Password"].ToString();
            string code = dr["Code"].ToString();
            if (password==tPassword.Text) 
            {
                Response.Write("<script>alert('你的验证码为：" + code + "'),location=('EssayIndex.aspx')</script>");
            }
            conn.Close();
        }
    }
}