定制特性

[assembly: AssemblyVersion("1.0.0.0")]

    [AttributeUsage(AttributeTargets.Class|AttributeTargets.Method,Inherited = true)]
    internal class TastyAttribute : Attribute
    {
    }

    [Tasty,Serializable]
    internal class BaseType
    {
        [Tasty]
        protected virtual void DoSomething(){}
    }
    //继承父类Tasty的特性
    internal class DerivedType : BaseType
    {
        //继承Tasty的特性
        protected override void DoSomething(){}
    }

    //如果特性类没有显示的引用AttributeUsage，则默认AttributeUsage如下
    [AttributeUsage(AttributeTargets.All,AllowMultiple = false, Inherited = true)]