Vista - How to change Style at runtime in application-level

Hi~

I want to change the style of all controls in application which
contains pages.
In document, I can use Style in Application.Resource

<Application.Resources>
<Style TargetType="{x:Type Button}"> ... </Style>
</Application.Resources>

But I can't change this style at runtime.
I try to use Application.Current.FindResource to get this style
reference and modify Setters, but get an InvalidOperationException, it
says the style is sealed(in use) and I can't modify it.
and I try to use BaseOn property to dynamically binding other style but
still get an exception.

Is there easier way to change a specified control's style in
application-level?
or release the sealed status of the style?

Thanks :-)

I have the book "Programming Windows Presentation Foundation" O'Reilly
There's a solution for replace skin at runtime in Chapter 6.
It dynamically replace the Application.Current.Resources, and it works.

But I still have no idea how can I modify the style which in use.
Thanks :-)

I would not think you can just modify the style object and have the system
do the right thing. It might work, but I would be surprised they chose to
have that level of overhead listening for changes on style objects. What is
likely to work is to derive a new style object from the old one, then assign
the new style to the visuals you wish affected. If you want to restyle
elements with updated default styles that may take some experimentation. I
would think that once a style is applied to an element, that changes to the
style object are not reapplied to the element. However when you set the
style property to a new style it would update the element.

Michael


"HolaMan" <reality.chang@gmail.com> wrote in message
news:1139477354.044628.33090@o13g2000cwo.googlegroups.com...
>
> I have the book "Programming Windows Presentation Foundation" O'Reilly
> There's a solution for replace skin at runtime in Chapter 6.
> It dynamically replace the Application.Current.Resources, and it works.
>
> But I still have no idea how can I modify the style which in use.
> Thanks :-)
>

Dear Michael, Thanks for you reply :-)

If I want to change a style of element, I can apply a new style for
that element.

However, if I want to change page-wise or application-wise style for
some controls, is there any quickly way to achieve?
or I need literally apply each element in a page or application.

Best Regards

Thanks u Michael

I got your mean :-)
Thanks u very much