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.
Assembly: mscorlib (in mscorlib.dll)
| Member name | Description | |
|---|---|---|
| All | Attribute can be applied to any application element. | |
| Assembly | Attribute can be applied to an assembly. | |
| Class | Attribute can be applied to a class. | |
| Constructor | Attribute can be applied to a constructor. | |
| Delegate | Attribute can be applied to a delegate. | |
| Enum | Attribute can be applied to an enumeration. | |
| Event | Attribute can be applied to an event. | |
| Field | Attribute can be applied to a field. | |
| GenericParameter | Attribute can be applied to a generic parameter. | |
| Interface | Attribute can be applied to an interface. | |
| Method | Attribute can be applied to a method. | |
| Module | Attribute can be applied to a module. | |
| Parameter | Attribute can be applied to a parameter. | |
| Property | Attribute can be applied to a property. | |
| ReturnValue | Attribute can be applied to a return value. | |
| Struct | Attribute can be applied to a structure; that is, a value type. |
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
Available since 8
.NET Framework
Available since 1.1
Portable Class Library
Supported in: portable .NET platforms
Silverlight
Available since 2.0
Windows Phone Silverlight
Available since 7.0
Windows Phone
Available since 8.1
