WPF (Windows Presentation Foundation) is a framework for building desktop client applications in Windows Vista and .NET Framework. It combines 2D and 3D graphics, documents, user controls and multimedia into a single framework. WPF uses hardware acceleration and vector graphics to make applications faster, scalable and resolution independent. It separates user interface design from programming logic using XAML and data binding. The WPF architecture includes managed and unmanaged layers that communicate with DirectX and the Windows API to render applications.

1. WPF
(WINDOWS PRESENTATION
FOUNDATION)
Kadir H. Kapadiya
Jr. S/W Developer

2. What is WPF?
 WPF is the engine that is responsible for creating, displaying, and
manipulating user-interfaces, documents, images, movies, and
media in Windows Vista.
 Physically, WPF is a set of libraries that have all functionality you
need to build, run, execute, and manage Windows Vista
applications.
 WPF combines application UIs, 2D graphics, 3D graphics,
documents and multimedia into one single framework. Its vector
based rendering engine uses hardware acceleration of modern
graphic cards. This makes the UI faster, scalable and resolution
independent.

3.  Windows Presentation Foundation (WPF) is a next-generation
presentation system for building Windows client applications with
visually stunning user experiences.
 With WPF, you can create a wide range of both standalone and
browser-hosted applications.
 WPF is included in the Microsoft .NET Framework, so you can build
applications that incorporate other elements of the .NET
Framework class library.

4. Separation of Appearance and Behavior
 WPF separates the appearance of an user interface from its
behavior. The appearance is generally specified in the Extensible
Application Markup Language (XAML), the behavior is
implemented in a managed programming language like C# or
Visual Basic.
 The two parts are tied together by data binding, events and
commands. The separation of appearance and behavior brings
the following benefits:
1. Appearance and behavior are loosely coupled
2. Designers and developers can work on separate models.
3. Graphical design tools can work on simple XML documents instead
of parsing code.

5. Advantage of WPF:
 Broad Integration: Prior to WPF, it was very difficult to use 3D, Video,
Speech, and rich document viewing in addition to normal 2D
Graphics and controls would have to learn several independent
technologies. WPF covers all these with consisting programming
model as well as tight integration when each type of media gets
composited and rendered.
 Resolution Independence: WPF applications are device
independent i.e., smart client applications. Like normal applications
it don't get decrease the size as the resolution gets increase. This is
possible because WPF emphasis on vector graphics.
 Hardware Acceleration: WPF is built on top of Direct 3D, content in a
WPF application whether 2D or 3D, Graphics or text is converted to
3D triangles, textures and other Direct 3D objects and then rendered
by hardware. WPF applications can get the benefit of hardware
acceleration for smoother graphics and all round better
performance.
 Declarative Programming: WPF takes the declarative programming
to the next level with the introduction of Extensible Application
Markup Language(XAML)
 XAML is like HTML in web used for creating the interface, resulting
graphical designers are empowered to contribute directly to the
look and feel of applications.

6. WPF Architecture
 WPF is actually a set of assemblies that build up the entire
framework. These assemblies can be categorized as:
1. Managed Layer
2. Unmanaged Layer
3. Core API

7.  Managed Layer: Managed layer of WPF is built using a number of
assemblies. These assemblies build up the WPF framework,
communicate with lower level unmanaged API to render its
content.
1. PresentationFramework.dll: Creates the top level elements like
layout panels, controls, windows, styles, etc.
2. PresentationCore.dll: It holds base types such as UIElement, Visual
from which all shapes and controls are Derived in
PresentationFramework.dll.
3. WindowsBase.dll: They hold even more basic elements which are
capable of being used outside the WPF environment like
Dispatcher object, Dependency Objects.

8.  Unmanaged Layer (milcore.dll): The unmanaged layer of WPF is
called milcore or Media Integration Library Core. It basically
translates the WPF higher level objects like layout panels, buttons,
animation, etc. into textures that Direct3D expects. It is the main
rendering engine of WPF.
 WindowsCodecs.dll: This is another low level API which is used for
imaging support in WPF applications. WindowsCodecs.dll
comprises a number of codecs which encode / decode images
into vector graphics that would be rendered into WPF screen.
 Direct3D: It is the low level API in which the graphics of WPF is
rendered.
 User32: It is the primary core API which every program uses. It
actually manages memory and process separation.
 GDI & Device Drivers: GDI and Device Drivers are specific to the
operating system which is also used from the application to
access low level APIs.

10. <Window x:Class="FirstWindowsApplication.Window1"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" x:Name="Window1"
Title="Window1" Height="300" Width="300">
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="Auto" />
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition MinWidth="50" />
<ColumnDefinition Width="Auto" />
<ColumnDefinition Width="*" />
</Grid.ColumnDefinitions>
<TextBlock Text="Enter Name :" Grid.Row="0" Grid.Column="0" />
<TextBox x:Name="txtName" Grid.Row="0" Grid.Column="1" MinWidth="50"/>
<Button Content="Click Me" Grid.Row="0" Grid.Column="2" Click="Button_Click"/>
</Grid>
</Window>

11. private void Button_Click(object sender, RoutedEventArgs e)
{
MessageBox.Show(string.Format("Hi {0}", this.txtName.Text));
}

12. Difference Between WPF And Silverlight:
 WPF is based off of the desktop CLR which is the full version of the
CLR.
 Silverlight is based on a much smaller and more compact CLR
which provides a great experience but does not have the full
breadth of CLR features. It also has a much smaller version of the
BCL.
 WPF you can create Windows App, Navigation app and XBAP (IE
based) application With Silverlight you can create only XAP
(Browser based application.).
 WPF supports 3 types of routed events (direct, bubbling, and
tunneling). Silverlight supports direct and bubbling only.
 Silverlight does not support MultiBinding.
 Silverlight supports the XmlDataProvider but not the
ObjectDataProvider. WPF supports both.

13. Thank You