?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 guanli : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        if ((string)Session["role"] != "adminstrator")
            Response.Redirect("default.aspx");
    }
    protected void Button1_Click(object sender, EventArgs e)
    {
        Session.Clear();
        Response.Redirect("default.aspx");
    }
}