手撸IOC

Console.WriteLine("Hello, World!");

MyIocContainer services = new MyIocContainer();

services.AddTransient();
services.AddTransient();



var myService = services.GetService();




public class MyIocContainer
{

    Dictionary _container = new();
    public void AddTransient()
    {
        if (_container.ContainsKey(typeof(TInterface)))
        {
            _container.Remove(typeof(TInterface));
        }

        _container.Add(typeof(TInterface), typeof(TImplement));
    }

    public T GetService()
    {

        return (T)GetService(typeof(T), _container);
    }

    private static object GetService(Type interfaceType, Dictionary container)
    {
        if (!container.ContainsKey(interfaceType))
        {
            throw new Exception($"there is no implement type of {interfaceType.Name}");
        }

        var implementType = container[interfaceType];
        var ctors = implementType.GetConstructors();
        var constructor = ctors.OrderByDescending(x => x.GetParameters().Count()).FirstOrDefault();
        if (constructor is null)
        {
            throw new ArgumentNullException(nameof(constructor));
        }

        var ctorParameters = constructor.GetParameters();

        List