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Introduction of XAML and WPF

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Posted On:  01/06/2013 10:24:54 
What is XAML ? What is WPF 


What is XAML?

XAML is a declarative markup language. As applied to the .NET Framework programming model, XAML simplifies creating a UI for a .NET Framework application. You can create visible UI elements in the declarative XAML markup, and then separate the UI definition from the run-time logic by using code-behind files, joined to the markup through partial class definitions. XAML directly represents the instantiation of objects in a specific set of backing types defined in assemblies. This is unlike most other markup languages, which are typically an interpreted language without such a direct tie to a backing type system. XAML enables a workflow where separate parties can work on the UI and the logic of an application, using potentially different tools.

When represented as text, XAML files are XML files that generally have the .xaml extension. The files can be encoded by any XML encoding, but encoding as UTF-8 is typical.


Extensible Application Markup Language (XAML) is a markup language for declarative application programming. Windows Presentation Foundation (WPF) implements aXAML processor implementation, and provides XAML language support. The WPF types are implemented such that they can provide the required type backing for a XAML representation. In general, you can create the majority of your WPF application UI in XAML markup.

What is WPF?

Windows Presentation Foundation (WPF) is a unified presentation subsystem for Windows, exposed through WinFX, the managed-code programming model for Windows Vista that extends the Microsoft .NET Framework. WPF consists of a display engine and a managed-code framework. WPF unifies how Windows creates, displays, and manipulates documents, media, and user interface (UI), enabling developers and designers to create visually stunning, differentiated user experiences.

WPF is based on managed code but uses a markup language, Extensible Application Markup Language (XAML), to make building applications much easier for designers. XAML-based applications currently support C# and Microsoft Visual Basic .NET. If you write a WPF application entirely in procedural code, you can use any common language runtime (CLR) language.


WPF Architecture


WPF is actually a set of assemblies that build up the entire framework. These assemblies can be categorized as:
            Managed Layer
            UnManaged Layer
            Core API

Features of WPF

Device Independent Pixel (DPI)
Built-In Support for Graphics and Animation
Redefine Styles and Control Templates
Resource based Approach for every control
New Property System & Binding Capabilities 

(Source From MSDN)

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