简易版ioc

    public class Container
    {
        private Dictionary<Type, Type> _dataDic = null; 
        // 问题1，构造函数属性赋值
        public Container()
        {
            _dataDic = new Dictionary<Type, Type>(1);
        }
        public void RegistType<T1, T2>()
        {
            _dataDic.Add(typeof(T1), typeof(T2));
        }
        // 问题2，子类和父类是一种类型
        public T ReSolve<T>()
        {
            return (T)Activator.CreateInstance(_dataDic[typeof(T)]);
        }
    }