Thanks for sharing your solution. You’re essentially using a behavior to do the same thing (“behavior” is just another name for encapsulating logic in an attached property). I’ve always been a big fan of behaviors. Your solution is very creative.

I’m sure there are many solutions to this problem, and I like seeing solutions that are different from mine. So thanks for your comment!

Bea

great blog, and cool post. I should have read this when it was written. Unfortunately, I didn’t, so I came up with the alternative solution I describe here: http://wpfglue.wordpress.com/2009/11/30/css-class-equivalent-in-wpf/

I like your solution because it is more powerful than mine, but I like mine also because it is less invasive, and has the potential of creating classes that are independent of the XAML element’s type.

Anyway, thanks for shareing this,
Hans

Yeah, I noticed that too. I also get the following incorrect error:
Error 1 No constructor for type ‘MultiStyleExtension’ has 1 parameters.

VS 2008 has trouble dealing with this markup extension, unfortunately.
I just upgraded this sample to VS 2010, and the designer is capable of handling the scenario just fine. That’s great news :)

Thanks,
Bea

Wordpress doesn’t support unescaped < in comments, which is why your sample XAML didn’t show up. I’m assuming the syntax you typed is the following:

<Button Style=”{local:MultiStyle . BigBoldButtonStyle}” />

Bea

I updated the code in the ProvideValue method as follows…

object key = null;

foreach (string currentResourceKey in resourceKeys)
{
key = currentResourceKey;
if (currentResourceKey == “.”)
{
IProvideValueTarget service = (IProvideValueTarget)serviceProvider.GetService(typeof(IProvideValueTarget));
key = service.TargetObject.GetType();
}
Style currentStyle = new StaticResourceExtension(key).ProvideValue(serviceProvider) as Style;

allowing for the following syntax

(assuming the implicit style and BigBoldButtonStyle are specified)