What does the Inherited bool property on attributes refers to?
Does it mean that if I define my class with an attribute AbcAtribute (that has Inherited = true), and if I inherit another class from that class, that the derived class will also have that same attribute applied to it?
To clarify this question with a code example, imagine the following:
[AttributeUsage(AttributeTargets.Class, Inherited = true)] public class Random: Attribute { /* attribute logic here */ } [Random] class Mother { } class Child : Mother { }
Does Child also have the Random attribute applied to it?
When Inherited = true (which is the default) it means that the attribute you are creating can be inherited by sub-classes of the class decorated by the attribute.
So - if you create MyUberAttribute with [AttributeUsage (Inherited = true)]
[AttributeUsage (Inherited = True)] MyUberAttribute : Attribute { string _SpecialName; public string SpecialName { get { return _SpecialName; } set { _SpecialName = value; } } }
Then use the Attribute by decorating a super-class...
[MyUberAttribute(SpecialName = "Bob")] class MySuperClass { public void DoInterestingStuf () { ... } }
If we create an sub-class of MySuperClass it will have this attribute...
class MySubClass : MySuperClass { ... }
Then instantiate an instance of MySubClass...
MySubClass MySubClassInstance = new MySubClass();
Then test to see if it has the attribute...
MySubClassInstance
Yes that is precisely what it means. Attribute
[AttributeUsage(Inherited=true)] public class FooAttribute : System.Attribute { private string name; public FooAttribute(string name) { this.name = name; } public override string ToString() { return this.name; } } [Foo("hello")] public class BaseClass {} public class SubClass : BaseClass {} // outputs "hello" Console.WriteLine(typeof(SubClass).GetCustomAttributes(true).First());
