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

public?partial?class?_Default?:?System.Web.UI.Page
{
????protected?void?Page_Load（object?sender?EventArgs?e）
????{
????????if?（!IsPostBack）
????????{
????????}
????}
}