You use Microsoft .NET Framework 4 to create a Windows Presentation Foundation (WPF) application. 
You create a window named ManageOrders that contains a Button control named showOtherSide.  
You add an animation named FlipSides as a resource of ManageOrders. 
You need to ensure that the following requirements are met:
FlipSides runs each time a user clicks showOtherSide. 
FlipSides runs only when a user clicks showOtherSide. 
What should you do?（）

You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4 to create a Windows Presentation Framework (WPF) application. 
You have a company logo that must appear on multiple forms in the application.  
The logo design changes frequently. 
You need to ensure that when the logo image is changed, you only need to update a single location. 
What should you do?（）