WPF Subjective Questions And Answers

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WPF Interview Questions and Answers

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WPF Interview Questions And Answers

Page 1

Questions 1 What is WPF?

Answer
Windows Presentation Foundation (WPF) is the presentation subsystem feature of the .NET Framework 3.0,that provide good design and advance controls. Silverlight is the Subset of WPF. Through WPF we can create Windows and WebBrowser Application.

Questions 2 
What is XBAP?

Answer
XBAP means XAML Browser Application. XBAP allows for WPF applications to be used inside a browser. For this .NET framework is required to be installed on the client system and hosted applications run in a partial trust sandbox environment.

Questions 3 
What is XAML extensible markup language?

Answer
XAML is an extensible markup language based on XML. XAML can be thought of as a declarative script for creating .NET 3.0 UI. It is particularly used in WPF as a user interface markup language to define UI elements, data binding, eventing and other features. It is also used in Windows Workflow Foundation (WF), in which the workflows themselves can be defined in XAML code.

Questions 4 
What are dependency properties?

Answer
These dependency properties belong to one class but can be used in another.
Consider the below code snippet:-


<Rectangle Height="72" Width="131" Canvas.Left="74" Canvas.Top="77" />


Height and Width are regular properties of the Rectangle. But Canvas. Top and Canvas. Left is dependency property as it belongs the canvas class. It is used by the Rectangle to specify its position within Canvas.

Questions 5 
What kind of documents are supported in WPF?

Answer
   There are two kind of major document supported in WPF Fixed format documents and Flow format document. Fixed format documents look like PDF format. They display content regardless of screen size and resolution. But flow format document adjust depending on screen size and resolution.