IOC

gistfile1.cs

using System;
using System.Collections.Concurrent;

namespace IOC
{
  public sealed class IocContainer
	{
		ConcurrentDictionary<Type,Lazy<Object>> container = new ConcurrentDictionary<Type, Lazy<Object>>();
		public static readonly IocContainer Default = new IocContainer();

		static IocContainer()
		{

		}
		/// <summary>
		/// Registers the service.
		/// </summary>
		/// <returns><c>true</c>, if service was registered, <c>false</c> otherwise.</returns>
		/// <typeparam name="T">The 1st type parameter.</typeparam>
		public bool RegisterService<T>() where T : new()
		{
			return RegisterService(typeof(T), () => new T());
		}
		/// <summary>
		/// Registers the service.
		/// </summary>
		/// <returns><c>true</c>, if service was registered, <c>false</c> otherwise.</returns>
		/// <param name="type">Type.</param>
		/// <param name="factoryMethod">Factory method.</param>
		public bool RegisterService(Type type, Func<Object> factoryMethod)
		{
			return container.TryAdd(type, new Lazy<Object>(factoryMethod));
		}
		/// <summary>
		/// Finds the service.
		/// </summary>
		/// <returns>The service.</returns>
		/// <typeparam name="T">The 1st type parameter.</typeparam>
		public T FindService<T>()
		{
			Lazy<Object> res;
			if (container.TryGetValue(typeof(T) , out res))
				return (T)res.Value;
			else
				return default(T);
		}
	}
}