login.aspx.cs

微信扫码关注公众号，代码整理好后第一时间通知你。

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 UserCenter_login : System.Web.UI.Page
{
    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);
        SqlConnection con = DB.getcon();
        string strsql = "select*from Users where UserName='"+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["UserName"];
            Session["UserID"]=dr["UserID"];
            Response.Redirect(Request.ApplicationPath+"Front.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('login.aspx')</script>");
        }
      }
        
        finally
        {
            con.Close(); 
        }

    }
}