在GridView中使用DataRow不起作用vb.net

Question

我正在尝试动态gridview，其中包括Insert linkbutton。当布尔值为true时，将添加一个新的空行。这是vb.net服务器端代码：

Public Function GetList(Optional ByVal Insert As Boolean = False) As DataTable
    Try
        Dim query As String = "Select iPanelID, iPanelParentID, iOrder, iModelID, cModelTitle, cModelAbrv," &
        " cModelCustodian, iAllowCreateFromPanel FROM Intranet.dbo.wf_Panel"
        Dim dt As DataTable = AppCommon.AppFunctions.AppExecuteSelectDataset(CommandType.Text, query, , , , True).Tables(0)

        If Insert Then
            CType(gv_list.Rows(0).Cells(9).Controls(0), LinkButton).Text = "Insert"
            Dim dr As DataRow = dt.NewRow()
            dt.Rows.InsertAt(dr, 0)
            gv_list.EditIndex = 0
        End If

        gv_list.DataSource = dt
        gv_list.DataBind()
        Return dt

    Catch ex As Exception

    End Try
End Function

我在链接按钮的操作上将布尔值设置为true。但它不起作用。唯一发生的事情是linkbutton更改为“Insert”

提前致谢。