数据分页(ViewState的用法)

         protected  System.Web.UI.WebControls.DataGrid DataGrid1;
         private  DataTable dtPerson
         {
            set
            {
                this.ViewState["dt"]=value;
            }
            get
            {
                return (DataTable)ViewState["dt"];
            }
        }
         private   void  Page_Load( object  sender, System.EventArgs e)
         {
            if(!this.IsPostBack)
            {
                dtPerson=((ses)Session["user"]).execsearch("select * from Person");
                DataGrid1.DataSource=dtPerson;
                DataGrid1.DataBind();
            }
        }
         private   void  DataGrid1_PageIndexChanged( object  source, System.Web.UI.WebControls.DataGridPageChangedEventArgs e)
         {
            DataGrid1.CurrentPageIndex=e.NewPageIndex;
            DataGrid1.DataSource=dtPerson;
            DataGrid1.DataBind();
        }

少量记录用此方法速度很快

试了下200多行20多个字段的表，几秒钟才刷新出来，内存也占了不少