单例模式——继承使用方式

namespace Feng.FramWorkDesign
{
    public class Singleton<T> where T: Singleton<T>
    {
        private static T mInstance;
        public static T MInstance
        {
            get
            {
                if (mInstance==null)
                {
                    var type = typeof(T);
                    var ctors = type.GetConstructors(BindingFlags.Instance | BindingFlags.NonPublic);
                    var ctor = Array.Find(ctors, c => c.GetParameters().Length == 0);

                    if (ctor==null)
                    {
                        throw new Exception("Non Public Constructor Not Fount in "+type.Name);
                    }

                    mInstance= ctor.Invoke(null) as T;
                }
                return mInstance;
            }
        }
    }
}