Login.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 Login : System.Web.UI.Page
{
    data data = new data();
    SqlDataReader dr;
    protected void Page_Load(object sender, EventArgs e)
    {

    }
    private void chkADmin()
    {
        if (Text1.Value.Trim() == "" && Password1.Value.Trim() == "")
        {
            Alert.AlertAndRedirect("没有输入账号和密码！", "Login.aspx");


        }
        else
        {
            dr = data.GetDataReader("select * from  Admin where name='" + Text1.Value.Trim() + "'and Password='" + Password1.Value.Trim() + "'");
            if (dr.Read())
            {
                Session["admin"] = dr["name"].ToString();
                Response.Redirect("admin/Default.aspx");

            }
            else
            {
                Alert.AlertAndRedirect("管理员的账号或者密码不对请重新登陆！", "Login.aspx");
            }
        }
    }
    private void TeachterLogin()
    {
        if (Text1.Value.Trim() == "" && Password1.Value.Trim() == "")
        {
            Alert.AlertAndRedirect("没有输入账号和密码！", "Login.aspx");


        }
        else
        {
            dr = data.GetDataReader("select * from  Teacher where xuehao='" + Text1.Value.Trim() + "'and pwd='" + Password1.Value.Trim() + "'");
            if (dr.Read())
            {
                Session["UserName"] = dr["UserName"].ToString();
                Session["xuehao"] = dr["xuehao"].ToString();
                Session["Teacherid"] = dr["id"].ToString();
                Response.Redirect("Teacher/Default.aspx");