I am working on project and I need to add WIndows.Foundation.Collection and Windows.UI.XAML. But Visual Studio cannot find those dlls.
The project which I am working on is simple game and it's from book.The example correspond to the VS2012, I use VS2015.
What I have tried:
I tried to add downloaded file Windows.UI.Xaml.dll, but I get error:
File could not be added. Please make sure that the file is accessible, and that it is a valid assembly or COM component.
The way I tried it was by reference manager.