AttributeTargets Enumeration
Specifies the application elements on which it is valid to apply an attribute.
This enumeration has a FlagsAttribute attribute that allows a bitwise combination of its member values.
Namespace: SystemAssembly: mscorlib (in mscorlib.dll)
| Member name | Description | |||
|---|---|---|---|---|
![]() ![]() | Assembly | Attribute can be applied to an assembly. | ||
![]() ![]() | Module | Attribute can be applied to a module.
| ||
![]() ![]() | Class | Attribute can be applied to a class. | ||
![]() ![]() | Struct | Attribute can be applied to a structure; that is, a value type. | ||
![]() ![]() | Enum | Attribute can be applied to an enumeration. | ||
![]() ![]() | Constructor | Attribute can be applied to a constructor. | ||
![]() ![]() | Method | Attribute can be applied to a method. | ||
![]() ![]() | Property | Attribute can be applied to a property. | ||
![]() ![]() | Field | Attribute can be applied to a field. | ||
![]() ![]() | Event | Attribute can be applied to an event. | ||
![]() ![]() | Interface | Attribute can be applied to an interface. | ||
![]() ![]() | Parameter | Attribute can be applied to a parameter. | ||
![]() ![]() | Delegate | Attribute can be applied to a delegate. | ||
![]() ![]() | ReturnValue | Attribute can be applied to a return value. | ||
![]() ![]() | GenericParameter | Attribute can be applied to a generic parameter.
| ||
![]() ![]() | All | Attribute can be applied to any application element. |
The AttributeUsageAttribute class uses this enumeration to specify the kind of element on which it is valid to apply an attribute.
AttributeTargets enumeration values can be combined with a bitwise OR operation to get the preferred combination.
The following example illustrates the application of attributes to various targets.
Note: |
|---|
Visual Basic and Visual C++ syntax currently do not support the application of attributes to type parameters. |
Imports System Module DemoModule ' This attribute is only valid on a class. <AttributeUsage(AttributeTargets.Class)> _ Public Class ClassTargetAttribute Inherits Attribute End Class ' This attribute is only valid on a method. <AttributeUsage(AttributeTargets.Method)> _ Public Class MethodTargetAttribute Inherits Attribute End Class ' This attribute is only valid on a constructor. <AttributeUsage(AttributeTargets.Constructor)> _ Public Class ConstructorTargetAttribute Inherits Attribute End Class ' This attribute is only valid on a field. <AttributeUsage(AttributeTargets.Field)> _ Public Class FieldTargetAttribute Inherits Attribute End Class ' This attribute is valid on a class or a method. <AttributeUsage(AttributeTargets.Class Or AttributeTargets.Method)> _ Public Class ClassMethodTargetAttribute Inherits Attribute End Class ' This attribute is valid on any target. <AttributeUsage(AttributeTargets.All)> _ Public Class AllTargetsAttribute Inherits Attribute End Class <ClassTarget, _ ClassMethodTarget, _ AllTargets> _ Public Class TestClassAttribute <ConstructorTarget, _ AllTargets> _ Public Sub New End Sub <MethodTarget, _ ClassMethodTarget, _ AllTargets> _ Public Sub Method1() End Sub <FieldTarget, _ AllTargets> _ Public myInt as Integer End Class Sub Main() End Sub End Module
Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC, Xbox 360, Zune
The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
