How to get the default syle of my Button in WPF?

I have create a Button style under Resource folder of the main application. I have added the reference of this button syle in the App.xml of the main application.

Now this style is applicable to all the b开发者_如何学运维uttons in the main application or any other assembly.

I want if I want to override my custom style of button to the normal button style , what should I do ??

Please help !!

if you don't want your custom style to be applied in Button just set Style={x:Null}.