MAUI Service Locator

MyServiceLocator.cs

using Microsoft.Extensions.Logging;
using System;

namespace YourNamespace;

// IMauiInitializeService will register immediately after MAUI has built its service container, so this class will be ready to go for all of your code
public class MyServiceLocator : Microsoft.Maui.Hosting.IMauiInitializeService
{
    public static IServiceProvider Services { get; private set; }
    
    public void Initialize(IServiceProvider services)
    {
        Services = services;
    }
}

// In your MauiProgram.cs
services.AddSingleton<IMauiInitializeService, MyServiceLocator>();

// In your code where dependency injection is hard to get at
var service = MyServiceLocator.Services.GetService(...);

My case is not initialized MyServiceLocator => Exception : Services is null

Soultion
services.AddSingleton<IMauiInitializeService, MyServiceLocator>(); instead of services.AddSingleton<MyServiceLocator>();

Forgot to add that. Thanks.