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1.	What is WPF?
	WPF is an abbreviation for Windows Presentation Foundation. It’s a set of .NET assemblies and supporting tools. It’s intended to provide a unified API for creating rich, sophisticated user interfaces on Windows XP and Windows Vista.

	Posted by Subbu. (Feb 11, 2014)
	The Windows Presentation Foundation is Microsoft next generation UI framework to create applications with a rich user experience. It is part of the .NET framework 3.0 and higher.
	Posted by Mamatha Reddy. (Feb 10, 2014)
	WPF is microsoft’s next generation UI which is used to enhance the user experience with rich feel and look.

2.	What are the types sibling libraries in WPF?
	There are three types of sibling libraries of WPF are : WCF WF CardSpace

	Posted by Balaram. (Feb 12, 2014)
	1. Windows Communication Foundation 2. Windows Work-Flow Foundation 3. Card Space

3.	What is the difference between WCF and WF?
	Windows Communication Foundation is focused on messaging. This API greatly simplifies all sorts of networking and communication tasks. It covers everything from web services to remoting to P2P and more. A powerful library for building workflow enabled applications. It utilizes a markup language for declaring workflows in an application,and thus prevents workflow from becoming hard-coded. It also makes it very easy for developers to create custom workflow tasks.

3.

What is the difference between WCF and WF?

Windows Communication Foundation is focused on messaging. This API greatly simplifies all sorts of networking and communication tasks. It covers everything from web services to remoting to P2P and more.
A powerful library for building workflow enabled applications. It utilizes a markup language for declaring workflows in an application,and thus prevents workflow from becoming hard-coded. It also makes it very easy for developers to create custom workflow tasks.

4.	What is the use of cardspace?
	CardSpace provides a common identification system that can be used by desktop applications,web sites, and more.

5.	What operating systems does WPF currently support?
	WPF is currently available on Windows XP and Windows Vista.

	Posted by Amal. (Dec 04, 2013)
	Now it supports Windows 8.1 too.
	Posted by Ramya. (Oct 17, 2013)
	WPF Supports on Windows XP Service pack2 or later windows7 and Windows8.

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