?using System;
using System.Data;
using System.Configuration;
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 _Default : System.Web.UI.Page 
{
    protected void Page_Load(object sender, EventArgs e)
    {
        if (User.Identity.Name != "")
        {
            Label1.Text = "Welcome    " + User.Identity.Name;
        }
        else
        {
            Label1.Text = "游客　未登錄";
        }
        
    }
}