login.aspx.cs

来自「图书馆的图书管理」· CS 代码 · 共 45 行

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 Login : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {

    }
    protected void ImageButton1_Click(object sender, ImageClickEventArgs e)
    {
        SqlConnection con = db.ceratcon();
        con.Open();
        SqlCommand cmd = new SqlCommand("select * from Users where  Uname='" + this.txtname.Text + "'and  Upwd='" + this.txtpwd.Text + "'", con);
        SqlDataReader sdr = cmd.ExecuteReader();
        if (sdr.Read())
        {
            Session["uname"] = sdr["Uname"].ToString();

            Response.Write("<script language='javascript'>alert('登录成功');location.href='index.aspx'</script>");

        }

        else
        {
            Response.Write("<script language='javascript'>alert('用户名或密码错误请重新登录');location.href='login.aspx'</script>");

        }
    }
    protected void ImageButton2_Click(object sender, ImageClickEventArgs e)
    {
        this.txtname.Text = "";
        txtpwd.Text = "";
    }
}