Introduction to MVC

Model-View-Controller (MVC) is a software architectural pattern that separates an application into three main logical components:

Model

• Represents the data and business logic
• Handles data validation
• Manages the application state

public class Product
{
    public int Id { get; set; }
    [Required]
    public string Name { get; set; }
    public decimal Price { get; set; }
    public string Description { get; set; }
}

View

• Presents data to users
• Handles the UI layout
• Uses Razor syntax

@model Product

<h1>@Model.Name</h1>
<div class="product-details">
    <p>Price: $@Model.Price</p>
    <p>@Model.Description</p>
</div>

Controller

• Processes incoming requests
• Handles user input
• Works with the Model

public class ProductController : Controller
{
    private readonly IProductService _service;

    public ProductController(IProductService service)
    {
        _service = service;
    }

    public IActionResult Details(int id)
    {
        var product = _service.GetProduct(id);
        return View(product);
    }
}

Request Flow

1. User makes a request to /Product/Details/1
2. Routing system directs to ProductController
3. Details action method is called
4. Model data is retrieved
5. View is rendered with model data
6. Response is sent to user