Coming from VFP my tendency is to want to subclass the Application object in my libraries.

Library:

public abstract class MYApplication : System.Windows.Application 

Application:

public partial class myApp : MYApplication

But I have a few questions...

Is this an unusual way to do this?

Any downside?

Any upside? <g>

In looking at it I think it may actually make application setup more complex than the way I am doing it now. (Creating a separate class to the side that contains my application wide static properties and methods.) Was just curious as to what is the common way to do this.