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PrivateComponentAttribute Class

Identifies a component as a private component that is only seen and activated by components in the same application. This class cannot be inherited.

System.Object
  System.Attribute
    System.EnterpriseServices.PrivateComponentAttribute

Namespace:  System.EnterpriseServices
Assembly:  System.EnterpriseServices (in System.EnterpriseServices.dll)

'Declaration
<ComVisibleAttribute(False)> _
<AttributeUsageAttribute(AttributeTargets.Class, Inherited := True)> _
Public NotInheritable Class PrivateComponentAttribute _
	Inherits Attribute

The PrivateComponentAttribute type exposes the following members.

  NameDescription
Public methodPrivateComponentAttributeInitializes a new instance of the PrivateComponentAttribute class.
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  NameDescription
Public propertyTypeIdWhen implemented in a derived class, gets a unique identifier for this Attribute. (Inherited from Attribute.)
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  NameDescription
Public methodEqualsInfrastructure. Returns a value that indicates whether this instance is equal to a specified object. (Inherited from Attribute.)
Protected methodFinalizeAllows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.)
Public methodGetHashCodeReturns the hash code for this instance. (Inherited from Attribute.)
Public methodGetTypeGets the Type of the current instance. (Inherited from Object.)
Public methodIsDefaultAttributeWhen overridden in a derived class, indicates whether the value of this instance is the default value for the derived class. (Inherited from Attribute.)
Public methodMatchWhen overridden in a derived class, returns a value that indicates whether this instance equals a specified object. (Inherited from Attribute.)
Protected methodMemberwiseCloneCreates a shallow copy of the current Object. (Inherited from Object.)
Public methodToStringReturns a string that represents the current object. (Inherited from Object.)
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  NameDescription
Explicit interface implemetationPrivate method_Attribute.GetIDsOfNamesMaps a set of names to a corresponding set of dispatch identifiers. (Inherited from Attribute.)
Explicit interface implemetationPrivate method_Attribute.GetTypeInfoRetrieves the type information for an object, which can be used to get the type information for an interface. (Inherited from Attribute.)
Explicit interface implemetationPrivate method_Attribute.GetTypeInfoCountRetrieves the number of type information interfaces that an object provides (either 0 or 1). (Inherited from Attribute.)
Explicit interface implemetationPrivate method_Attribute.InvokeProvides access to properties and methods exposed by an object. (Inherited from Attribute.)
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For more information about using attributes, see Extending Metadata Using Attributes.

The following code example shows the use of the PrivateComponentAttribute type.


Imports System
Imports System.EnterpriseServices
Imports System.Reflection


' References:
' System.EnterpriseServices

' Note: Access checks must be performed at the component level to allow access
' to private components.

<assembly: ApplicationAccessControl(False, AccessChecksLevel := AccessChecksLevelOption.ApplicationComponent)>


<PrivateComponent()>  _
Public Class PrivateComponentAttribute_Example
    Inherits ServicedComponent

    Public Sub Example() 
        ' Display some output.
        MsgBox("Private component called successfully.")

    End Sub 'Example
End Class 'PrivateComponentAttribute_Example

Public Class PrivateComponentAttribute_Test
    Inherits ServicedComponent

    Public Sub Test() 
        ' Create a new instance of the example class.
        Dim example As New PrivateComponentAttribute_Example()

        ' Call a method on the class.
        example.Example()

    End Sub 'Test
End Class 'PrivateComponentAttribute_Test


.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

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