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Interview Questions and Answers

Microsoft Silverlight is a development platform for building rich internet applications (RIAs) similar to Adobe Flash. It allows developers to create engaging, interactive web experiences using XAML and .NET languages like C# and VB.NET.

Silverlight supports C# and VB.NET for application logic, and XAML (Extensible Application Markup Language) for designing the user interface.

Key features include cross-browser and cross-platform support, integration with .NET, smooth streaming of media, Deep Zoom technology, and support for animations, vector graphics, and multimedia content.

XAML (Extensible Application Markup Language) is used to design the UI in Silverlight applications. It defines objects, layouts, and controls declaratively, which are then linked to logic written in C# or VB.NET.

A Silverlight application typically consists of XAML files for UI design, .xap files (packaged assemblies), .dll libraries, and configuration files like App.xaml for application lifecycle management.

A .xap file is the packaged output of a Silverlight project. It contains all compiled assemblies, resources, and the application manifest, which the Silverlight plugin downloads to run the app.

The Silverlight Plugin is a browser extension that allows Silverlight applications to run in web browsers by interpreting the .xap file and rendering its UI.

Deep Zoom is a Silverlight feature that allows users to zoom into high-resolution images smoothly and efficiently without performance lag, useful in mapping and image-based applications.

Silverlight uses a subset of the .NET Framework known as the Silverlight Runtime, allowing developers to reuse existing .NET libraries and code while running securely within a browser sandbox.

No, Silverlight applications run in a restricted security sandbox and cannot directly access local files unless the user explicitly grants permission via OpenFileDialog or SaveFileDialog.

Out-of-Browser mode allows users to install Silverlight applications on their desktop and run them without opening a web browser. These applications can also work offline with limited functionality.

App.xaml defines global application-level resources and startup logic. It contains the entry point for the Silverlight application and references to styles or templates used across the app.

Common Silverlight controls include Button, TextBox, ComboBox, ListBox, Canvas, Grid, MediaElement, and DataGrid for UI design and interactivity.

Silverlight supports data binding using XAML attributes. It can bind UI elements to properties, collections, or external data sources using DataContext and INotifyPropertyChanged.

WPF (Windows Presentation Foundation) is for desktop applications, while Silverlight is for web-based applications. Silverlight provides a subset of WPF’s functionality for browser environments.

Yes. Silverlight can consume WCF services, REST APIs, and SOAP services using asynchronous network calls to retrieve or send data from remote servers.

Silverlight supports Smooth Streaming technology for adaptive bitrate media delivery, ensuring seamless video playback even under changing network conditions.

Silverlight applications can be hosted on a web server and accessed via browsers, or installed locally as Out-of-Browser apps. Deployment involves serving the .xap package and embedding it using object tags in HTML.

The Silverlight application lifecycle includes Application_Startup, Application_Exit, and Application_UnhandledException events, handled in the App.xaml.cs file.

Silverlight declined due to the rise of HTML5, JavaScript frameworks, and the discontinuation of browser plugin support. Microsoft officially ended Silverlight support in October 2021.

The Silverlight application lifecycle includes Application_Startup, Application_Exit, and Application_UnhandledException events, handled in the App.xaml.cs file.

Silverlight declined due to the rise of HTML5, JavaScript frameworks, and the discontinuation of browser plugin support. Microsoft officially ended Silverlight support in October 2021.