login.aspx.cs

这是一个很好的图书管理系统 数据库SQL2005

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.Threading;
//５１aｓｐx
public partial class Login : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        //初始化Session对象
        Session["UserID"] = "";
        Session["Level"] = "";
        Session["UserName"] = "";
        if (!IsPostBack)
        {
            HttpCookie mycookie = Request.Cookies["myname"];
            if (mycookie != null)
            {
                txtname.Text = mycookie.Values["name"].ToString();
            }
        }
    }
    protected void btnLogin_Click(object sender, EventArgs e)
    {
        //判断验证码是否正确
        if (Session["CheckCode"].ToString() == txtyzm.Text.Trim().ToUpper())
        {
            PublicClass.UserModel user = new PublicClass.UserModel();
            user.UserName = txtname.Text;
            user.PassWord = txtpwd.Text;
            BLL.T_User login = new BLL.T_User();
            login.User = user;
            int i = login.UserLogin();
            switch (i)
            {
                case 0:
                    {
                        //写入Ｃｏｏｋｉｅ
                        if (cbName.Checked==true)
                        {
                            HttpCookie mycookie = new HttpCookie("myname");
                            mycookie.Expires = DateTime.Now.AddDays(1);
                            mycookie.Values["name"] = txtname.Text;
                            Response.Cookies.Add(mycookie);
                        }
                        //设置Session
                        Session["UserID"] = user.UserID;
                        Session["UserName"] = user.UserName;
                        Session["Level"] = user.Level;
                        //根据权限跳转页面
                        if (Session["Level"].ToString()=="1")
                        Response.Redirect("UserMan.aspx");
                        if (Session["Level"].ToString() == "2")
                        Response.Redirect("BorrowMan.aspx");
                        break;
                    }
                case -1:
                    {
                        Label3.Text = "该用户不存在！";
                        break;
                    }
                case 100:
                    {
                        Label3.Text = "用户密码错误";
                        break;
                    }
            }
        }
        else
        {
            Label3.Text = "验证码错误"; 
        }
    }
}