Admin/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 Admin_Login : System.Web.UI.Page
{
    SqlHelper data = new SqlHelper();
    protected void Page_Load(object sender, EventArgs e)
    {

    }
    protected void BtnLogin_Click(object sender, EventArgs e)
    {
        if (TxtUserName.Value == "" && TxtPassword.Value == "")
        {
            Alert.AlertAndRedirect("没有输入账号和密码！", "Login.aspx");


        }
        else
        {
            SqlDataReader dr;
            dr = data.GetDataReader("select * from  Admin where Name='" + TxtUserName.Value.Trim() + "'and pwd='" + TxtPassword.Value.Trim() + "'");
            if (dr.Read())
            {
                Session["UserId"] = dr["Name"].ToString();
                Session["roule"] = "管理员";
                Response.Redirect("AdminIndex.aspx");
            }
            else
            {
                Alert.AlertAndRedirect("账号或者密码不对请重新登陆！", "Login.aspx");
            }
        }
    }
}