The Best Way to Create an Interface in AspNet 6 (C-Sharp)

1. Create your generic Interface like this and you will never regrete

public interface IMyGenericName<T>{
public Task<bool> DoesExist(int id);
public Task<T> AddAsync(T item);
public Task<T> GetById(T item);

}

//Then in your Startup.cs register the Interface as

services.AddScope<IMyGenericName<MyClassNameHere>,MyRepositoryClass>();

//Then in your Respository Class do
public classs MyRepositoryClass : IMyGenericName<MyClassNameHere>{
//Then Implement our functions here.

}

This way you don't duplicate Interfaces everywhere when you only need standard functions across multiple DTO or Modals.

- Enjoy