PrivateComponentAttribute クラスとは何？わかりやすく解説 Weblio辞書

.NET Framework クラスライブラリリファレンス

索引トップ用語の索引ランキング

PrivateComponentAttribute クラス

コンポーネントを、同一アプリケーション内のコンポーネントでだけ認識しアクティブにするプライベートコンポーネントとして識別します。このクラスは継承できません。

名前空間: System.EnterpriseServices
アセンブリ: System.EnterpriseServices (system.enterpriseservices.dll 内)
構文

Visual Basic (宣言)

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

Visual Basic (使用法)

Dim instance As PrivateComponentAttribute

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

C++

[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

JScript

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

解説

属性の使用方法については、「属性を使用したメタデータの拡張」を参照してください。

使用例

PrivateComponentAttribute 型の使用方法を次のコード例に示します。

Visual Basic

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();
    }
}

C++

#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