源代码/MasterPage.master.cs

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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 MasterPage : System.Web.UI.MasterPage
{
    protected void Page_Load(object sender, EventArgs e)
    {
        if (Session["username"] != null)
        {
            //会员没有退出登陆
            divLogin.Visible = false;
            divShow.Visible = true;
        }
        if (!IsPostBack)
        {
            string SQL = "select * from TB_Links";
            DataSet ds = DBHelper.GetDataSet(SQL);
            this.rep1.DataSource = ds.Tables[0];
            this.rep1.DataBind();

            //string SQL1 = "select top 5 * from TB_News order by ID desc";
            //DataSet ds1 = DBHelper.GetDataSet(SQL1);
            //this.GridView2.DataSource = ds1.Tables[0];
            //this.GridView2.DataBind();

        }
    }

    protected void btLogin_Click(object sender, EventArgs e)
    {
        string membername, pwd;
        membername = this.txtMemberName.Text.Trim();
        pwd = this.txtPWD.Text;


        string sql1 = "select * from TB_XueXiao where XueXiao ='" + membername + "' and PassWord ='" + pwd + "'";

        DataSet ds1 = DBHelper.GetDataSet(sql1);


        if (ds1.Tables[0].Rows.Count >= 1)
        {
            //存在该用户
            Session["username"] = ds1.Tables[0].Rows[0][1];//将登录的会员编号和会员名称用session变量保存，以备后用
         
            this.divLogin.Visible = false;
            this.divShow.Visible = true;
        }
        else
        {
            //该用户不存在
            Response.Write("<script language='javascript'>alert('错误的用户名或者密码！请重新输入！');</script>");