NeelBhatt

services.AddSingleton<ISingletonOperation, SingletonOperation>();
services.AddTransient<ITransientOperation, TransientOperation>();
services.AddScoped<IScopedOperation, ScopedOperation>();
services.AddTransient<IMyService, MyService>();

NeelBhatt

private readonly ISingletonOperation _singletonOperation;
private readonly IScopedOperation _scopedOperation;
private readonly ITransientOperation _transientOperation;
private readonly IMyService _myService;

private readonly ILogger<HomeController> _logger;

public HomeController
(
    ILogger<HomeController> logger,

NeelBhatt

public interface IMyService
{
}

public class MyService : IMyService
{
    private readonly ISingletonOperation _singletonOperation;
    private readonly ITransientOperation _transientOperation;
    private readonly IScopedOperation _scopedOperation;
 

NeelBhatt

public interface IScopedOperation : IOperation
{
}

public class ScopedOperation : IScopedOperation
{
    public Guid Id { get; }    
    
    public ScopedOperation()
    {

NeelBhatt

public interface IScopedOperation : IOperation
{
}

public class ScopedOperation : IScopedOperation
{
    public Guid Id { get; }    
    
    public ScopedOperation()
    {

NeelBhatt

public interface ITransientOperation : IOperation
{
}

public class TransientOperation : ITransientOperation
{
    public Guid Id { get; }    
    
    public TransientOperation()
    {

NeelBhatt

public interface ISingletonOperation : IOperation
{
}

public class SingletonOperation : ISingletonOperation
{
    public Guid Id { get; }    
    
    public SingletonOperation()
    {

NeelBhatt

public interface IOperation
{
    Guid Id { get; }
}

NeelBhatt

var bar = new Bar();
var foo = new Foo(bar);

NeelBhatt

class Bar : IBar {
 // ...
}class Foo {
    private readonly IBar _bar;
 
    public Foo(IBar bar) {
        _bar = bar;
    }
}