在dateview排序的问题，疑惑，请教下！

Question

songtable是我在页面显示的时候读取数据库后填充的数据表
view是我默认的视图
        ds = New DataSet
        adp.Fill(ds, "SongDate")
        view = New DataView
        Songtable = ds.Tables("SongDate")
        view = Songtable.DefaultView
'地区排序
 Sub OrderAreaName(ByVal sender As System.Object, ByVal e As System.EventArgs)
            If Session("OrderType") = 1 Then
            Dim diqu As New DataView
            diqu = Songtable.DefaultView
            diqu.Sort = "AreaName desc"
            Repeater1.DataSource = diqu
            Repeater1.DataBind()
            Session("OrderType") = 0
        Else
            Repeater1.DataSource = view
            Repeater1.DataBind()
            Session("OrderType") = 1
        End If
    End Sub
现在我在排序的时候在执行到ELSE后老提示我的没有绑定到数据，默认的

Answer 1

page _load里的
 ViewState["SortOrder"]="GRPID";
 ViewState["OrderDire"]="ASC";
//升降序
        private void DataGrid1_SortCommand(object source, System.Web.UI.WebControls.DataGridSortCommandEventArgs e)
        {
            string vortExp=e.SortExpression;
            if(ViewState["SortOrder"].ToString()==vortExp)
            {
                if((string)ViewState["OrderDire"]=="Desc")
                {
                    ViewState["OrderDire"]="ASC";
                }
                else
                {
                    ViewState["OrderDire"]="Desc";
                }
            }
            else
            {
                ViewState["SortOrder"]=e.SortExpression ;
            }
            this.linkdb ();
        }

Answer 2

我的是在repeater中自己写的，提取dataview来写的～不一样啊，