MVC Defined

ASP.NET is a web application platform, which includes with two different frameworks as ASP.NET WebForms and ASP.NET MVC.“ASP.NET Web Forms” and “ASP.NET MVC” are the two frameworks, for development of web applications.

 

The Model-View-Controller (MVC) architectural pattern separates an application into three main

components the model, the view, and the controller. It is a lightweight, highly testable presentation framework that (as with Web Forms-based applications) is integrated with existing ASP.NET features, such as master pages and membership-based authentication

 

Models. Model objects are the parts of the application that implement the logic for the application s data domain. Often, model objects retrieve and store model state in a database. For example, a Product object might retrieve information from a database, operate on it, and then write updated information back to a Products table in SQL Server. 

 

In small applications, the model is often a conceptual separation instead of a physical one. For example, if the application only reads a data set and sends it to the view, the application does not have a physical model layer and associated classes. In that case, the data set takes on the role of a model object.

 

Views. Views are the components that display the application s user interface (UI). Typically, this UI is created from the model data. An example would be an edit view of a Products table that displays text boxes, drop-down lists, and check boxes based on the current state of a Products object. 

Controllers. Controllers are the components that handle user interaction, work with the model, and ultimately select a view to render that displays UI. In an MVC application, the viewo only displays information; the controller handles and responds to user input and interaction. For example, the controller handles query-string values, and passes these values to the model, which in turn queries the database by using the values.

Here are the steps to create first MVC applications:

Steps for “MyFirstMVCWebApp”:

1)             Open Visual Studio 2010.

2)             File – New – Project.

3)            Visual C# - .NET Framework 4 - ASP.NET MVC 3 Web Application

4)            Name = MyFirstMVC3WebApp

5)            Click on OK.

6)            It shows “New ASP.NET MVC 3 Project” dialog box.

7)            Template = Internet Application

8)            View Engine = Razor

9)            Check the checkbox “Use HTML 5 semantic markup”.

10)         Un-check the check box “Create a unit test project”.

11)          Click on OK.

12)          It creates the folder structure of the project. 

13)         {controller}/{action}/{id} is the default URL pattern in MVC 3.

14)         That’s why, Views/Home/Index.cshtml acts as a start page for this web site.

15)         Press “F5” to run the application.

16)         That’s it.