login2.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 login2 : System.Web.UI.Page
{
     string ConnectionString = ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString;
     data data = new data();
     SqlDataReader dr;
     Alert js = new Alert();
  
    protected void Page_Load(object sender, EventArgs e)
    {
        //if (!IsPostBack)
        //{
        //    Session["userName"] = null;
        //    Session["entryType"] = null;
        //}
    }




  
    private void TeachterLogin()
    {
        if (txtTName.Text == "" && txtTPwd.Text == "")
        {
            Alert.AlertAndRedirect("没有输入账号和密码！", "Login2.aspx");


        }
        else
        {
            dr = data.GetDataReader("select * from  Teacher where xuehao='" + txtTName.Text.Trim() + "'and pwd='" + txtTPwd.Text.Trim() + "'");
            if (dr.Read())
            {
                Session["UserName"] = dr["UserName"].ToString();
                Session["xuehao"] = dr["xuehao"].ToString();
                Session["zt"] = dr["xuehao"].ToString();
                Session["id"] = dr["id"].ToString();
              
                Response.Write("<script language=javascript>window.open('Teacher/Main.aspx');window.close();</script>");

            }
            else
            {
                Alert.AlertAndRedirect("账号或者密码不对请重新登陆！", "Login.aspx");
            }
        }
    }