In silverlight, normally we apply style per XAML file by adding the style into UserControl.Resources section. Sample below

http://pastebin.com/embed_iframe.php?i=FgjnHqAT

and to apply the style in the control we do

http://pastebin.com/embed_iframe.php?i=veWGiyNh

but let’s say you want to have a global style to all of your XAML, how do you do that?You can put your style into app.xaml and then the way to refer the style in your control is as per above so basically the way you apply the style will remain the same but the difference is only where you put the style

http://pastebin.com/embed_iframe.php?i=8cw0x8h0