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ASP.NET MVC interview questions MVC architecture model-view-controller components benefits features action results data passing scaffolding model binding Razor HTML helpers filters routing testability separation of concerns modularity extensibility flexibility.
Top 10 ASP.NET MVC Interview Questions and Answers
What is ASP.NET MVC?
ASP.NET MVC is a framework for building web applications that follow the Model-View-Controller (MVC) architectural pattern. It provides a clean separation of concerns between the application's data (model), user interface (view), and control logic (controller).
How is ASP.NET MVC different from traditional ASP.NET Web Forms?
ASP.NET Web Forms is an event-driven web framework that provides a drag-and-drop approach to building web pages. In contrast, ASP.NET MVC uses a more modular approach that emphasizes separation of concerns and testability. MVC provides more control over HTML and URLs, whereas Web Forms abstracts those details away from the developer.
What are the key components of ASP.NET MVC?
The key components of ASP.NET MVC are the Model, View, Controller, Routing, Filters, and Helpers. The Model represents the data and business logic of the application, the View represents the user interface, and the Controller handles user input and communicates with the Model and View. Routing maps URLs to Controllers, Filters provide cross-cutting concerns such as authentication and caching, and Helpers provide reusable functionality for views.
What are the benefits of using ASP.NET MVC?
Some benefits of using ASP.NET MVC include separation of concerns, testability, control over HTML and URLs, extensibility, and flexibility. MVC also provides a more lightweight and modular architecture compared to Web Forms.
What are some of the key features of ASP.NET MVC?
Some key features of ASP.NET MVC include support for dependency injection, scaffolding for creating views and controllers, attribute-based routing, asynchronous controller actions, built-in AJAX support, and support for multiple view engines.
What are the different types of action results in ASP.NET MVC?
There are several types of action results in ASP.NET MVC, including ViewResult, PartialViewResult, ContentResult, JsonResult, FileResult, RedirectResult, and RedirectToRouteResult.
How can you pass data from a Controller to a View in ASP.NET MVC?
You can pass data from a Controller to a View by using a ViewModel, ViewBag, or ViewData. The ViewModel is a strongly-typed class that represents the data for a View, while the ViewBag and ViewData are dynamic objects that allow you to pass data between a Controller and View.
What is scaffolding in ASP.NET MVC?
Scaffolding is a code generation tool in ASP.NET MVC that allows you to quickly create controllers and views for CRUD (Create, Read, Update, Delete) operations. Scaffolding generates code based on a Model and a set of templates, which can be customized to meet specific requirements.
What is the difference between ViewBag and ViewData in ASP.NET MVC?
ViewBag and ViewData are both used to pass data from a Controller to a View, but ViewBag is a dynamic object and ViewData is a dictionary. ViewBag allows you to use dot notation to access data, while ViewData requires you to use an index to access data.
What is model binding in ASP.NET MVC?
Model binding is the process of mapping HTTP request data to a Model in an ASP.NET MVC application. ASP.NET MVC provides default model binding for simple types, and you can customize model binding for complex types or non-standard data sources.