PrivateComponentAttribute-Klasse

Identifiziert eine Komponente als private Komponente, die nur von Komponenten derselben Anwendung erkannt und aktiviert wird. Diese Klasse kann nicht vererbt werden.

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

Syntax

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

[AttributeUsageAttribute(AttributeTargets.Class, Inherited=true)] 
[ComVisibleAttribute(false)] 
public sealed class PrivateComponentAttribute : Attribute

[AttributeUsageAttribute(AttributeTargets::Class, Inherited=true)] 
[ComVisibleAttribute(false)] 
public ref class PrivateComponentAttribute sealed : public Attribute

/** @attribute AttributeUsageAttribute(AttributeTargets.Class, Inherited=true) */ 
/** @attribute ComVisibleAttribute(false) */ 
public final class PrivateComponentAttribute extends Attribute

AttributeUsageAttribute(AttributeTargets.Class, Inherited=true) 
ComVisibleAttribute(false) 
public final class PrivateComponentAttribute extends Attribute

Hinweise

Weitere Informationen über das Verwenden von Attributen finden Sie unter Erweitern von Metadaten mithilfe von Attributen.

Beispiel

Im folgenden Codebeispiel wird die Verwendung des PrivateComponentAttribute-Typs veranschaulicht.

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

using System;
using System.EnterpriseServices;
using 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 : ServicedComponent
{
    public void Example()
    {
        // Display some output.
        Console.WriteLine("Private component called successfully.");
    }
}

public class PrivateComponentAttribute_Test : ServicedComponent
{
    public void Test()
    {
        // Create a new instance of the example class.
        PrivateComponentAttribute_Example example =
            new PrivateComponentAttribute_Example();

        // Call a method on the class.
        example.Example();
    }
}

#using <System.EnterpriseServices.dll>

using namespace System;
using namespace System::EnterpriseServices;

// 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 ref class PrivateComponentAttributeExample : public ServicedComponent
{
public:
    void DisplayMessage()
    {
        // Display some output.
        Console::WriteLine("Private component called successfully.");
    }
};

public ref class PrivateComponentAttributeTest : public ServicedComponent
{
public:
    static void Test()
    {
        // Create a new instance of the example class.
        PrivateComponentAttributeExample^ example =
            gcnew PrivateComponentAttributeExample();

        // Call a method on the class.
        example->DisplayMessage();
    }
};

import System.*;
import System.EnterpriseServices.*;
import 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)
 */

/** @attribute PrivateComponent()
 */
public class PrivateComponentAttribute_Example extends ServicedComponent
{
    public void Example()
    {
        // Display some output.
        Console.WriteLine("Private component called successfully.");
    } //Example
} //PrivateComponentAttribute_Example

public class PrivateComponentAttribute_Test extends ServicedComponent
{
    public void Test()
    {
        // Create a new instance of the example class.
        PrivateComponentAttribute_Example example = 
            new PrivateComponentAttribute_Example();
        // Call a method on the class.
        example.Example();
    } //Test
} //PrivateComponentAttribute_Test

Vererbungshierarchie

System.Object
   System.Attribute
    System.EnterpriseServices.PrivateComponentAttribute

Threadsicherheit

Alle öffentlichen statischen (Shared in Visual Basic) Member dieses Typs sind threadsicher. Bei Instanzmembern ist die Threadsicherheit nicht gewährleistet.

Plattformen

Windows 98, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

.NET Framework unterstützt nicht alle Versionen sämtlicher Plattformen. Eine Liste der unterstützten Versionen finden Sie unter Systemanforderungen.

Versionsinformationen

.NET Framework

Unterstützt in: 2.0, 1.1, 1.0

Siehe auch

Referenz

PrivateComponentAttribute-Member
System.EnterpriseServices-Namespace