AttributeUsage
attributeThe AttributeUsage
attribute is used to describe the manner in which the attribute class can be used.
A class that is decorated with the AttributeUsage
attribute must derive from System.Attribute
, either directly or indirectly. Otherwise, a compile-time error occurs.
[AttributeUsage(AttributeTargets.Class)] public class AttributeUsageAttribute: System.Attribute { public AttributeUsageAttribute(AttributeTargets validOn) {…} public AttributeUsageAttribute(AttributeTargets validOn, bool allowMultiple, bool inherited) {…} public bool AllowMultiple { virtual get {…} virtual set {…} } public bool Inherited { virtual get {…} virtual set {…} } public AttributeTargets ValidOn { virtual get {…} } } public enum AttributeTargets { Assembly = 0x0001, Module = 0x0002, Class = 0x0004, Struct = 0x0008, Enum = 0x0010, Constructor = 0x0020, Method = 0x0040, Property = 0x0080, Field = 0x0100, Event = 0x0200, Interface = 0x0400, Parameter = 0x0800, Delegate = 0x1000, All = Assembly | Module | Class | Struct | Enum | Constructor | Method | Property | Field | Event | Interface | Parameter | Delegate, ClassMembers = Class | Struct | Enum | Constructor | Method | Property | Field | Event | Delegate | Interface, }