Xamarin is a cross-platform mobile development framework that allows you to build native mobile applications with C# and share code between them. There are two approaches: native Xamarin – write native UI code in C# (views cannot be shared, business logic can be shared), and Xamarin.Forms – write shared UI in XAML (native controls are being generated, and business logic can be shared as well) The beauty of the first approach is ability to take advantage o...