WebApp/login.aspx.cs

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

namespace WebApp
{
    public partial class login : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {

        }

        protected void btnlogin_Click(object sender, EventArgs e)
        {
            if (txtname.Text == "" || txtpwd.Text == "")
            {
                alert("用户名或者密码不能为空!");
                return;
            }


            if (txtname.Text == GetValue("username") && txtpwd.Text == GetValue("userpwd"))
            {
                Session["isadmin"] = true;
                Response.Redirect("Default.aspx");
            }
            else
            {
                alert("请正确填写用户和密码!");
                return;
            }
        }
        string GetValue(string keyname)
        {
            return System.Configuration.ConfigurationManager.AppSettings[keyname];//51(aspx)
        }
        void alert(string msg)
        {
            this.ClientScript.RegisterStartupScript(this.GetType(), "a", "<script>alert('" + msg + "');</script>");
        }
    }
}