Silverlight Interview Questions and Answers for freshers

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100 Silverlight Interview Questions and Answers for Freshers

  1. What is Silverlight?

    • Answer: Silverlight is a discontinued application framework created by Microsoft for building and deploying rich internet applications (RIAs). It was designed to run within web browsers and provided a platform for creating interactive experiences with multimedia capabilities, comparable to Adobe Flash. However, it has been superseded by other technologies like HTML5, JavaScript, and .NET MAUI.

  2. What are the key features of Silverlight?

    • Answer: Key features included cross-browser compatibility (though limited compared to modern technologies), support for XAML (Extensible Application Markup Language) for declarative UI design, integration with .NET framework, multimedia playback capabilities (audio, video), and support for animation and rich graphical elements.

  3. Explain XAML in the context of Silverlight.

    • Answer: XAML (Extensible Application Markup Language) is an XML-based language used in Silverlight to define the user interface (UI). It allows developers to declaratively create UI elements, arrange them, and set their properties, separating the UI design from the application logic (C# or VB.NET code).

  4. What is the role of the Silverlight runtime?

    • Answer: The Silverlight runtime is a browser plug-in (now obsolete) that provided the environment for executing Silverlight applications. It handled rendering the UI, managing the application's lifecycle, and interacting with the browser and operating system.

  5. How does Silverlight handle data binding?

    • Answer: Silverlight uses data binding to connect UI elements to data sources. This allows UI elements to automatically update when the underlying data changes and vice-versa. It supports various binding modes (OneWay, TwoWay, OneTime) and can bind to various data sources like collections and objects.

  6. Explain the concept of events in Silverlight.

    • Answer: Events are notifications raised by UI elements or other objects in response to user actions or other changes. Developers use event handlers (methods) to respond to these events and execute appropriate code. Examples include button clicks, mouse movements, and data changes.

  7. What are some common controls used in Silverlight development?

    • Answer: Common controls include Buttons, TextBoxes, TextBlocks, ListBoxes, DataGrids, Image controls, MediaElements (for audio/video), and various layout panels (Grid, StackPanel, Canvas).

  8. How does Silverlight handle animations?

    • Answer: Silverlight offers robust animation capabilities using Storyboards. Storyboards allow developers to define animations by manipulating properties of UI elements over time. Animations can be triggered by events or controlled programmatically.

  9. Explain the difference between a UserControl and a CustomControl in Silverlight.

    • Answer: A UserControl is a composite control that combines existing controls to create a reusable component. A CustomControl, however, allows for more extensive customization, enabling developers to create entirely new controls with unique behaviors and appearances.

  10. What are the different ways to deploy a Silverlight application?

    • Answer: Silverlight applications could be deployed as XAP (XML Application) files, which were hosted on a web server and downloaded by the browser when the user accessed the application. Out-of-browser applications were also possible, offering more flexibility.

  11. What is the role of the Application object in a Silverlight application?

    • Answer: The Application object is the root object of a Silverlight application. It manages the application's lifecycle, resources, and provides access to application-level services.

  12. Explain the concept of Isolated Storage in Silverlight.

    • Answer: Isolated Storage provides a secure way for Silverlight applications to store data locally on the user's machine. Each application has its own isolated storage space, preventing conflicts between applications.

  13. What is the purpose of the Dispatcher object in Silverlight?

    • Answer: The Dispatcher object is used to ensure that UI updates and other operations are performed on the UI thread. This is crucial to prevent threading issues and maintain the stability of the UI.

  14. How can you handle exceptions in a Silverlight application?

    • Answer: Exceptions are handled using try-catch blocks, similar to other .NET languages. Appropriate error handling mechanisms should be implemented to gracefully manage unexpected situations.

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