userlogin.ascx.cs

B/S asp.net的C#编的网站

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 UserLogin : System.Web.UI.UserControl
{
    protected void Page_Load(object sender, EventArgs e)
    {            
        if (Session["login_ID"] != null && Session["login_ID"] != "")
        {
            WebUser user = new WebUser();
            user.UserID  = Session["login_ID"].ToString();
            loginname.Text = user.UserID;
            Panel1.Visible = false;
            Panel2.Visible = true;

            WebUserManager wum = new WebUserManager();
            user = wum.UserInfoLoad(user);
            if (user.UserPower > 0)
            {
                HyperLink4.Visible = true;
            }
        }
    }

    protected void Button1_Click(object sender, EventArgs e)
    {
        WebUser user = new WebUser();
        user.UserID = usernametxt.Text;
        user.UserPwd = pwdtxt.Text;
        WebUserManager wum = new WebUserManager();

        if (wum.UserPWDCheck(user))
        {
            Session.Add("login_ID", user.UserID);
            Response.Redirect("./Default.aspx");
        }
        else
        {
            Response.Write("<script LANGUAGE='javascript'>alert('对不起，登录失败！');history.go(-1);</script>");

        }
    }
    protected void LinkButton_Click(object sender, EventArgs e)
    {
        Session["login_ID"] = null;
        Response.Redirect("./Default.aspx");
    }
}