asp：TableRow设置可见属性不起作用

Question

I'm working on a .NET 3.5 web application which shows/hides table rows contained in ascx files via an interface implementation (the controls containing the table implement the interface).

So, given this markup in the .ascx:

<asp:Table id="MyTable" runat="server">
<asp:TableRow ID="Foo" runat="server">
        <asp:TableCell ID="FooCell"
            runat="server"  ColumnSpan="3">
            //Cell contents omitted
        </asp:TableCell>
<asp:TableCell .... ellided
    </asp:TableRow>
</asp:Table>

The interface:

public interface IMyInterface
{
    Table GetPageDataTable();
}

The implementation in the ascx's code behind:

#region IMyInterface Members

    public Table GetPageDataTable()
    {
        return MyTable;
    }

    #endregion

When I use a method like the one below from the containing page, as I loop through the table rows, the contains statement returns true however, the row's Visible property = false.

private void SetVisibleRows(IMyInterface control)
    {
        // the list stored in session contains 'Foo'
        List<string> choices = (List<string>)Session["selectionsList"]; 

        Table tbl = control.GetPageDataTable();

        foreach (TableRow r in tbl.Rows)
        {
            //r.ID == 'Foo'
            r.Visible = choices.Contains(r.ID, StringComparer.OrdinalIgnoreCase);
        }             
  }

I've also tried this directly in the control's codebehind, and even setting Foo.Visible = true; still shows visible = false in the debug window.

Any help with this would be appreciated as it's driving me batty. I have another control which implements the interface and it's working fine for that one.

Thanks!

Answer 1

I figured this out, and thought I'd share the answer.

The call to SetVisibleRows needs to occur on the Page's OnLoadComplete Event. Trying to set row visibility before the control loads won't work.

Thanks Tim, for your response.