Depending on where you set the delegate for the SelectedIndexChanged event vs how the TabPages get loaded or instantiated or whatever, my gues is that the SelectedIndexChanged event is firing when you don't expect it to. Have you tried debugging with a breakpoint on that event handler and then checked the Stack Trace?

But probably the easiest workaround is to check that tcOrders.SelectedIndex > -1 first.

~~Bonnie



>Hi everybody,
>
>In my form I have only two places where I try to change Menu.Enabled property.
>
>This is one
>
>private void tcOrders_SelectedIndexChanged(object sender, EventArgs e)
> {
> this.SearchMenuItem.Enabled = (this.tcOrders.SelectedIndex == this.tcOrders.TabPages.IndexOf(tabSearch));
>
>and another one in the form's Constructor where I set it to true. In design time it is set to true as well. Yet the form comes with this menu disabled and I could not find where does it change.
>
>Do you have ideas how can I figure this out?
>
>Thanks.