问题
There are two Page class under System.Windows.Controls and Windows.UI.Xaml.Controls, when I new a windows phone page, both page works fine. What the different between those two page, and how to choose which to use?
回答1:
The major Difference between them are where are they used and Referenced.
System.Windows.Controls is used for windows phone 8 Silverlight Application and
Windows.UI.Xaml.Controls is used for Windows 8 [Windows Store apps] and Windows Phone 8.1 [Windows Runtime apps] Application and as well as for Universal Apps
来源：https://stackoverflow.com/questions/26313037/what-the-different-between-system-windows-controls-page-and-windows-ui-xaml-cont