What is App.xaml and purpose of using it

1.	What is App.xaml and purpose of using it
Answer» This file is used in WPF/SilverLight applications. And the purpose of using this files is given below:- (1)Its DEFINE global STYLES inside the RESOURCES tag (2)Its define properties that can then be used for data passing between .xaml pages. (3)Its define event handlers LIKE Application_Error, Application_Startup wherever needed. (4)Its provides a startup URI in WPF or specify the startup page in SilverLight applications

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