The XAML designer in Blend & VS is a projection of a running application, but unlike a full-fledged app, usage of certain programming constructs and resources might cause the designer to crash or behave in an unexpected manner.
MVVM pattern is widely used in developing of XAML-based GUI applications. Without using this pattern it is impossible to provide the quality UX design implementations. Quality of UX design directly depends on the techniques or features that used for implementing the MVVM pattern.
Data binding is the process that establishes a connection between the application UI and business logic. If the binding has the correct settings and the data provides the proper notifications, then, when the data changes its value, the elements that are bound to the data reflect changes automatically.
XAML is used to describe visual user interfaces. WPF allows for the definition of both 2D and 3D objects, rotations, animations, and a variety of other effects and features.
Usually C#, which reduces it to a set of objects. Along with a host of other XML dialects it is an example of a new type of specification for GUIs. This article takes a look at XAML's tags to see what—if anything—is new in them.
Microsoft's XAML is a new spin on XML-based GUI description languages, borrowing very little syntax from established standards.
