Recursive DesignMode checker:
http://groups.google.se/groups?ie=UT....gbl&lr=&hl=sv
/claes
"Lecture Snoddddgrass" <maley@hamburg.fry> wrote in message
news:eG6OSHQ5DHA.2168@TK2MSFTNGP12.phx.gbl...[color=blue]
> Hi,
>
> When I create a UserControl-derived object, I often expose various
> public properties. One of the things that I hate about the WinForms[/color]
designer[color=blue]
> is that if I decide to embed one of these controls in a form (or another
> control), the designer likes to "touch" each of my custom properties --
> either by trying to "set" it to a default value (null/zero) or trying to
> "get" it's value. This is a real PITA because often times calling "get" on
> these properties results in my code attempting to connect to another[/color]
server,[color=blue]
> retrieve some information, cache it, etc... While this is great at[/color]
runtime,[color=blue]
> it just doesn't make sense at design-time. Trying to "set" these[/color]
properties[color=blue]
> causes similar problems.
>
> I make it a regular practice in the get/set handlers of my public
> properties to always check the "DesignMode" property -- and if it's true,
> I'll immediately return zero/null for the "get" or simply return[/color]
immediately[color=blue]
> for the "set"... This seems like a simple workaround for VS.NET's[/color]
irritating[color=blue]
> design-time behavior. The problem is that DesignMode doesn't always return
> the correct value. It sometimes returns false even though the control is
> being used in design mode. This happens when my UserControl-derived object
> is placed in another UserControl-derived object which is then placed in
> either a form or another control. In this nasty case, the DesignMode
> property of my control will always return false even if my control is[/color]
being[color=blue]
> used in design mode. I'd be happy to write my own recursive DesignMode
> checker that looks up the stack of parent controls... but even this is
> impossible because DesignMode is a protected property, not public, so my
> control has no way of checking the DesignMode property of its parents!
>
> Is there a way around this tedious bug? This DesignMode thing is[/color]
killing[color=blue]
> me.
>
> Thanks...
>
>[/color]
WinForms: DesignMode property is wrong! 
