Building Windows 8 Apps with C# and XAML

9. MVVM and Testing

Mvvm is the abbreviation for a user interface design pattern called Model-View-View Model. This is a pattern (a reusable solution to a commonly occurring problem) that was introduced many years ago for Windows Presentation Foundation (WPF) development and was later adopted by Silverlight, web-based applications like knockout.js, Windows Phone, Xbox, and Windows 8 apps. The central idea behind MVVM is a separation of UI implementation from presentation and business logic that uses data-binding to connect the layers. This results in a number of benefits including making it easier to work on the design (look and feel) aspects of applications and to apply testing. You can use the Portable Class Library (PCL) with the MVVM pattern ...