Application Architecture - Repository with Service

An Interface is a kind of contract that specifies what the application needs. Let's see how we can use an interface with the repository pattern.

Project Configurations

Creating a Project with MVC Pattern

Server Architecture - Distributing Projects

Implementing MVC Pattern

Application Architecture - MVC

Creating Repository

Application Architecture - Repository

Using the Interface

Creating an Interface

Create a folder to hold an interface class

Add an interface in the folder

Add needed methods

Inheritance

Go to the repository and add the interface as a parent, and implement the methods you created in the interface

Adding the Interface as a Service

We need to add the interface in the Program.cs as a service to use it. Add the code below

builder.Services.AddScoped<IItemRepo, ItemRepo>();

Call the Interface in the Controller Class

A repository pattern without an interface looks as below, replace the repository with the interface

private readonly IItemRepo _repo;
public StoreController(IItemRepo repo)
{
  this._repo = repo;
}

Call the method

[HttpGet]
public ActionResult<List<Item>> GetItems()
{
  return _repo.GetItems();
}

 

In this writing, we have seen how we can use the MVC repository pattern in .NET with EntityFramework