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ASP.NET MVC
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Friday, March 17, 2023 || Views:
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MVC architecture ASP.NET MVC Model View Controller separation of concerns.
MVC architecture is a widely used pattern in ASP.NET MVC framework for building web applications. This architecture provides a clear separation of concerns, making the application more maintainable, testable, and scalable. In this article, we will discuss the MVC architecture in detail and how it works in ASP.NET MVC with a practical example.
MVC architecture is a popular pattern used in ASP.NET MVC framework to develop web applications. It divides an application into three components: Model, View, and Controller. This architecture provides separation of concerns, making the application more maintainable and testable.
Model: It is the business logic or data access layer of an application. It represents the data and the behavior of the application. In ASP.NET MVC, the model is represented by classes that interact with the database or any other data source.
View: It is the presentation layer of an application. It represents the user interface of an application. In ASP.NET MVC, the view is represented by Razor views or other HTML templates.
Controller: It is the component that handles the user's requests and manages the interaction between the Model and View components. In ASP.NET MVC, the controller is represented by classes that inherit from the Controller class.
When a user requests a page, the request is first handled by the Controller component, which retrieves the required data from the Model component and passes it to the View component. The View component then renders the HTML markup and sends it back to the user's browser.
Let's look at an example to understand this architecture better.
Suppose we have an application that displays a list of products. We will create a Model component that retrieves data from a database and a View component that displays the products in a table.
//Model
public class Product
{
public int Id { get; set; }
public string Name { get; set; }
public decimal Price { get; set; }
}
public class ProductContext : DbContext
{
public DbSet<Product> Products { get; set; }
}
//View
@model List<Product>
<table>
<tr>
<th>ID</th>
<th>Name</th>
<th>Price</th>
</tr>
@foreach (var product in Model)
{
<tr>
<td>@product.Id</td>
<td>@product.Name</td>
<td>@product.Price</td>
</tr>
}
</table>
//Controller
public class ProductController : Controller
{
private ProductContext db = new ProductContext();
public ActionResult Index()
{
var products = db.Products.ToList();
return View(products);
}
}
In the above code, we have created a Product model that represents a product and a ProductContext class that interacts with the database. We have also created a Razor view that displays the products in a table and a ProductController class that retrieves the products from the database and passes them to the view.
In the Index action method of the ProductController class, we retrieve the list of products from the database using the ProductContext class and pass it to the view using the View method.
This is just a basic example of how the MVC architecture works in ASP.NET MVC. In real-world applications, the architecture can be much more complex, with multiple models, views, and controllers.
In conclusion, the MVC architecture is a powerful pattern that provides a separation of concerns in web applications. It makes the application more maintainable, testable, and scalable. By following this architecture, we can create robust and efficient applications that meet the user's requirements.