Manage/adminlogin.aspx.cs

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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;
public partial class Manage_adminlogin : System.Web.UI.Page
{
    SqlConnection con = DB.getcon();
    protected void Page_Load(object sender, EventArgs e)
    {

    }
    protected void ImageButton2_Click(object sender, ImageClickEventArgs e)
    {
        string username = this.TextBox1.Text.ToString();
        string pwd = this.TextBox2.Text.ToString();
        string strpwd = System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(pwd.Trim(), "md5").ToString().ToLower().Substring(8,16);

        string strsql = "select*from Managers where ManagerName='"+username+"'  and Pwd='"+strpwd+"'";
        con.Open();
        SqlCommand cmd = new SqlCommand(strsql, con);
        try
        {
            SqlDataReader dr = cmd.ExecuteReader();

            if (dr.Read())
            {


                Session["RoleID"] = dr["RoleID"];
                Session["UserName"] = dr["ManagerName"];
                Session["UserID"] = dr["ManagerID"];
                Response.Redirect("~/Manage/Manage.aspx");
            }
      
            else
            {
                Response.Write("<script laguage='javascript'>alert('用户名或密码不正确，请重新输入！');window.location.href('adminlogin.aspx')</script>");
            }
        }
        catch(Exception e1)
        {
            Response.Write(e1.Message); 
        }
        finally
        {
            con.Close();
        }
    }
}