Inherit Form

Hi all expert,

I need to create a baseform with MustOverride function, but i found that
once I had the parent form with mustoverride function, the child form are
not displayable in design view.

What had I had wrong?

Thanks alot.

[alantolan]

If you have a mustoverride function then the form becomes Mustinherit.

MustInherit forms cannot be instantiated but, the designer needs to
instantiate it to display the derived form.

Thus the problem.

hth,
Alan.

Hi alan,
sorry that, I still do not understand how I can make my child form
display able at design view...
can u briefly describe how? thanks a lot.

<al*******@users.com>
???????:11**********************@o13g2000cwo.googl egroups.com...

If you have a mustoverride function then the form becomes Mustinherit.

MustInherit forms cannot be instantiated but, the designer needs to
instantiate it to display the derived form.

Thus the problem.

hth,
Alan.

[The Grim Reaper]

He's saying that you can't.

_________________________________________
The Grim Reaper

<Windy> wrote in message news:%2****************@TK2MSFTNGP15.phx.gbl...

Hi alan,
sorry that, I still do not understand how I can make my child form
display able at design view...
can u briefly describe how? thanks a lot.

<al*******@users.com>
???????:11**********************@o13g2000cwo.googl egroups.com...

If you have a mustoverride function then the form becomes Mustinherit.

MustInherit forms cannot be instantiated but, the designer needs to
instantiate it to display the derived form.

Thus the problem.

hth,
Alan.

[Phill. W]

<Windy> wrote in message news:%2****************@TK2MSFTNGP10.phx.gbl...

I need to create a baseform with MustOverride function,
Actually, you don't, because currently, you can't.
i found that once I had the parent form with mustoverride function,
the child form are not displayable in design view.

because the Form's designer really *does* need to instantiate
your "abstract" form before it can use it.
(Don't know if this changes with VS'2005).

Remove the "MustOverride" keyword and add a very simple, if
annoying, implementation, something like

Protected Overridable Sub Beep()
If Not System.Diagnostics.Debugger.IsAttached Then
Throw New NotImplementedException()
End If
End Sub

People will get the idea *very* quickly ... ;-)

HTH,
Phill W.