what is model view controller
What is a Model View Controller (MVC) Framework?
ASP.NET MVC is a free and fully supported Microsoft framework methodology that divides an application’s implementation into three component roles: models, views, and controllers for building web applications.
ASP.NET MVC provides the following benefits:
- Provides complete control over your HTML markup
- Enables rich AJAX integration
- Clean website URLs (SEO friendly urls)
- Clear separation of concerns which results in web applications that are easier to maintain and extend over time.
- Testability – including support for test-driven development.
M for “Model”: It represents the data of the Database functionalities
Example: Create Sales, Get Sales, Edit Sales, Delete Sales
V for “View”: it handles flow of the application user interface of the pages with
Textbox, Checkbox, buttons…
Example: Edit.aspx page, Create.aspx Page
Note: view displays only information of user interface.
C for “Controller: it takes care of presentation of the end user interaction. It will interact with model and view and respond to user input requirement.
MVC is a clean separation between the data model and the user interface in such a way that changes to the user interface don’t affect data handling.
Model View Controller
Advantages of an MVC-Based Web Application
The ASP.NET MVC framework offers the following advantages:
- It makes it easier to manage complexity by dividing an application into the model, the view, and the controller.
- It does not use view state or server-based forms. This makes the MVC framework ideal for developers who want full control over the behavior of an application.
- It uses a Front Controller pattern that processes Web application requests through a single controller. This enables you to design an application that supports a rich routing infrastructure.
- It provides better support for test-driven development (TDD).
- It works well for Web applications that are supported by large teams of developers and for Web designers who need a high degree of control over the application behavior.
Features of the ASP.NET MVC Framework
The ASP.NET MVC framework provides the following features:
- Separation of application tasks (input logic, business logic, and UI logic), testability, and test-driven development (TDD). All core contracts in the MVC framework are interface-based and can be tested by using mock objects, which are simulated objects that imitate the behavior of actual objects in the application. You can unit-test the application without having to run the controllers in an ASP.NET process, which makes unit testing fast and flexible. You can use any unit-testing framework that is compatible with the .NET Framework.
- An extensible and pluggable framework. The components of the ASP.NET MVC framework are designed so that they can be easily replaced or customized. You can plug in your own view engine, URL routing policy, action-method parameter serialization, and other components. The ASP.NET MVC framework also supports the use of Dependency Injection (DI) and Inversion of Control (IOC) container models. DI enables you to inject objects into a class, instead of relying on the class to create the object itself. IOC specifies that if an object requires another object, the first objects should get the second object from an outside source such as a configuration file. This makes testing easier.
- Extensive support for ASP.NET routing, which is a powerful URL-mapping component that lets you build applications that have comprehensible and searchable URLs. URLs do not have to include file-name extensions, and are designed to support URL naming patterns that work well for search engine optimization (SEO) and representational state transfer (REST) addressing.
- Support for using the markup in existing ASP.NET page (.aspx files), user control (.ascx files), and master page (.master files) markup files as view templates. You can use existing ASP.NET features with the ASP.NET MVC framework, such as nested master pages, in-line expressions (<%= %>), declarative server controls, templates, data-binding, localization, and so on.
- Support for existing ASP.NET features. ASP.NET MVC lets you use features such as forms authentication and Windows authentication, URL authorization, membership and roles, output and data caching, session and profile state management, health monitoring, the configuration system, and the provider architecture.
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