using?System;
using?System.Collections.Generic;
//using?System.Linq;
using?System.Web;
using?System.Web.UI;
using?System.Web.UI.WebControls;
using?System.Data;
using?System.Data.SqlClient;
public?partial?class?AddClass?:?System.Web.UI.Page
{
????protected?void?Page_Load（object?sender?EventArgs?e）
????{

????????if?（!Page.IsPostBack）
????????{
????????????MyDataBind（）;
????????}
????}
????private?void?MyDataBind（）
????{
????????String?classid?=??Request[“classid“];
????????String?teacherId?=?Request[“teacherId“];
????????String?userNumber?=?““;
????????String?score?=?“0“;
????????String?className?=??Request[“className“];
????????//設置連接字符串
????????string?connstr?=?“server=B204-21\\SQL2008;;Integrated?Security=true;database=?StudentDB?“;
????????//創建Connection對象
????????SqlConnection?conn?=?new?SqlConnection（connstr）;
????????try
????????{
????????????if?（Request.Cookies[“login“]?==?null?||?Request.Cookies[“login“][“userNumber“]?==?““）??//兩個位置順序不可換?在未登錄情況下報空指針
????????????{
????????????????Response.Write（“?yle=‘?position:absolute;???top:50%;left:50%;?margin:-100px?0?0?-150px;?width:300px;?height:200px;z-index:99;?‘>請登錄后再查詢！