How to Implement Dependency Injection in a Console Application?

 

Implementing dependency injection in a .NET Core console application involves setting up a ServiceCollection, configuring services, and building a service provider.

Example:

using Microsoft.Extensions.DependencyInjection;
using System;

namespace ConsoleAppDI
{
    public interface IGreetingService
    {
        void Greet(string name);
    }

    public class GreetingService : IGreetingService
    {
        public void Greet(string name)
        {
            Console.WriteLine($"Hello, {name}!");
        }
    }

    class Program
    {
        static void Main(string[] args)
        {
            // Setup DI
            var serviceCollection = new ServiceCollection();
            ConfigureServices(serviceCollection);

            var serviceProvider = serviceCollection.BuildServiceProvider();

            // Get service and use it
            var greeter = serviceProvider.GetService<IGreetingService>();
            greeter.Greet("World");
        }

        private static void ConfigureServices(IServiceCollection services)
        {
            services.AddTransient<IGreetingService, GreetingService>();
        }
    }
}