What is the purpose of Controllers in an ASP.NET MVC Application?

ASP.Net Core MVC Controllers

What is ASP.Net MVC Controller?

In an MVC application, controllers are responsible for handling incoming requests and returning the appropriate response. They act as the intermediary between the Model and the View.

When a client (such as a web browser) makes a request to an ASP.NET MVC application, the request is sent to the routing system, which matches the request to a specific controller based on the URL pattern. The controller then processes the request and determines the appropriate response.

Responsibilities of Controller 

Controllers are responsible for the following tasks:

  • Handling incoming requests
  • Retrieving and manipulating data using the Model
  • Selecting the appropriate View to render the response
  • Passing data to the View for rendering
  • Returning the final response to the client

Controllers are typically defined as C# classes that inherit from the Controller base class provided by the ASP.NET MVC framework. These classes can define action methods, which are methods that handle specific requests. Each action method typically corresponds to a specific URL route in the application.

The controllers are also responsible for handling and validating the input coming from the user, it is also responsible for returning the appropriate status code.

It's important to note that controllers should not include any complex business logic, but rather focus on handling requests and returning the appropriate response. Complex business logic should be handled by the Model.

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