qtleft.ascx.cs

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;

public partial class qtleft : System.Web.UI.UserControl
{
    protected void Page_Load(object sender, EventArgs e)
    {
        if (Session["uname"] != null)
        {
            Panel2.Visible = true;
            Panel1.Visible = false;
        }
        else
        {
            //Session.Abandon();
            Panel1.Visible = true;
            Panel2.Visible = false;
        }
    }
    protected void Button1_Click(object sender, EventArgs e)
    {

        string sql;
        sql = "select * from xuesheng where xuehao='" + TextBox1.Text.ToString().Trim() + "' and mima='" + TextBox2.Text.ToString().Trim() + "'";
        DataSet result = new DataSet();
        sqlConn conn = new sqlConn();
        result = conn.hsggetdata(sql);
        if (result.Tables[0].Rows.Count > 0)
        {
            Session["uname"] = TextBox1.Text.ToString().Trim();
            Session["mima"] = TextBox2.Text.ToString().Trim();
            Session["userid"] = result.Tables[0].Rows[0]["ID"].ToString();
            Response.Write("<script>location.href='default.aspx';</script>");
        }
        else
        {
            Response.Write("<script>javascript:alert('登陆失败，用户名或密码错误！');location.href='default.aspx';</script>");
        }
    }
    protected void Button2_Click(object sender, EventArgs e)
    {
        Session.Abandon();
        Response.Write("<script>javascript:alert('安全退出!');location.href='default.aspx';</script>");
    }


}