login.ascx.cs

通过微软的最新技术ASP.NET2.0开发一个类似BtoC、CtoC的企业产品信息发布系统。 整体设计思想与规划： 用Firework设计图形

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;

public partial class login : System.Web.UI.UserControl
{
    //这里不用asp.net的画图功能产生的随机数～
    protected void Page_Load(object sender, EventArgs e)
    {

        
        if (!this.Page.IsPostBack)
        {
            rnd();
          
        }
        if (Session["shop"] != null)
        {
            this.Panel1.Visible = false;
            this.Panel2.Visible = true;
        }
        else
        {
            this.Panel2.Visible = false;
            this.Panel1.Visible = true;
        }
    }
    public void rnd()
    {
        Random rnd = new Random();
        int rndi = 1000 + rnd.Next(8999);
        this.Label1.Text = rndi.ToString();
        Session["rnd"] = rndi;
    }

    protected void LinkButton1_Click(object sender, EventArgs e)
    {
        if (this.TextBox3.Text != Session["rnd"].ToString())
        {
            Response.Redirect("Default.aspx");
        }
        else
        {
            string username = this.TextBox1.Text;
            string userpwd = this.TextBox2.Text;
            int count = Convert.ToInt32(db.scr("select count(*) from Cs where c1='" + username + "'and c2='" + userpwd + "'"));
            if (count > 0)
            {
                this.Panel1.Visible = false;
                this.Panel2.Visible = true;
                Session["shop"] = db.scr("select c1 from Cs where c1='" + username + "'");
          
            }
            else
            {
                Response.Write("<script>alert('用户名或密码错误');</script>");
            }
        }
    }
    protected void LinkButton2_Click(object sender, EventArgs e)
    {


        Session.Clear();
        Response.Redirect("Default.aspx");
        
     
    }
    protected void LinkButton3_Click(object sender, EventArgs e)
    {

        if (this.TextBox1.Text == "Admin" && this.TextBox2.Text == "Admin" && this.TextBox3.Text == Session["rnd"].ToString())
            Session["Admin"] = this.TextBox1.Text;
        Response.Redirect("admin/Default.aspx");

       

    }
}