• ASP.NET MVC is a framework for building web applications using the Model-View-Controller pattern, which separates an application into three main components: Models (data), Views (user interface), and Controllers (business logic).

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• Model: Represents the application's data and business rules.
• View: Displays the data to the user (UI).
• Controller: Handles user input, processes it, and interacts with the Model to return the appropriate View.

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• The main components are Models, Views, Controllers, and the Routing system.

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• A Layout page is a shared template that defines a common structure for multiple Views (like a master page).

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• A Controller is a class that handles incoming requests, processes user input, and returns responses (usually a View).

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• A Model represents the data and business logic of the application. It can also include data validation logic.

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• A View is a template that displays the data to the user. It is usually written in Razor syntax and is responsible for rendering the UI.

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• Routing is the process of mapping incoming requests to specific controller actions based on the URL patterns defined in the application.

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• A View renders a complete page, while a Partial View is a reusable component that can be included in other Views.

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• Action Methods are public methods in a Controller that respond to HTTP requests. They return an ActionResult that determines the response to the client.

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• The Index action method is typically used as the default action to display the main page of a Controller.

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• Use the return View(); statement in an action method, optionally passing a model.

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• HTML Helpers are methods that generate HTML markup in Views. Common helpers include Html.TextBoxFor, Html.DropDownListFor, etc.

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• The Global.asax file contains application-level event handlers, such as Application_Start, where you can configure routes and filters.

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• ViewData: A dictionary of objects that can be accessed in Views (requires casting).
• ViewBag: A dynamic wrapper around ViewData, allowing for easier access.
• TempData: Used to store data temporarily and available for the next request (useful for redirections).

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• Define an action method to accept POST requests, model bind the submitted data, and process it as needed.

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• Model binding is the process of converting HTTP request data into .NET objects automatically by the framework.

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• In the RouteConfig class, you can define custom routes using routes.MapRoute() method.

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• The RouteConfig class is responsible for defining the routing rules for the application.

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• Use Data Annotations in models for validation rules and enable unobtrusive validation in Views using jQuery.

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• Data Annotations are attributes used to enforce validation rules on model properties, such as [Required], [StringLength], etc.

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• The Authorize attribute restricts access to a Controller or action method to authenticated users only.

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• Use configuration files (like web.config), environment variables, and different settings for each environment.

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• Types include Authorization Filters, Action Filters, Result Filters, and Exception Filters.

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• Filters are attributes that provide a way to run code before or after an action method executes (e.g., authorization, logging).

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• You can use custom error pages, the HandleError attribute, or global exception handling in Application_Error.

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• ActionResult is a base class for various result types returned by action methods, allowing for flexibility in returning different responses (e.g., Views, JSON, Redirects).

What are the differences between GET and POST requests in the context of MVC?

• GET requests retrieve data from the server and can be cached. POST requests submit data to the server and should not be cached, as they modify data.