ASP.NET MVC

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Request Flow in ASP.NET MVC framework?

Ajay Kumar · Answer

In the ASP.NET MVC (Model-View-Controller) framework, the request flow follows a specific sequence of steps to handle incoming HTTP requests and produce responses. Here is a high-level overview of the request flow in ASP.NET MVC: Routing : When an HTTP request is received by the ASP.NET MVC application, the first step is routing. The URL of the request is examined to determine which controller and action method should handle it. This is typically done using a routing configuration defined in the RouteConfig.cs file in your application. Controller Selection : Once the routing system identifies the appropriate controller and action, it creates an instance of the corresponding controller class. The controller is responsible for processing the request and coordinating the interaction between the model and the view. Action Method Execution : The selected action method on the controller is executed. Action methods are responsible for processing the request, performing any necessary business logic, and returning the appropriate data to the view. Model Interaction : The action method may interact with the model, which represents the application's data and business logic. This interaction can include querying a database, retrieving data, or updating the model's state. View Rendering : After the action method has processed the request and prepared the necessary data, it typically returns a view. The view is responsible for rendering the HTML that will be sent as the response to the client's browser. The view can use the data provided by the action method to generate dynamic content. Response Generation : The generated HTML from the view is combined with any layout or master page defined in the application to create the final HTML response. The response is then sent back to the client's browser. Client Interaction : The client's browser receives the HTML response and renders it to display the web page. If the page contains forms or links, the user can interact with the application by submitting forms or clicking links, leading to new HTTP requests and repeating the request flow.

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