PrivateComponentAttribute 类

定义

public ref class PrivateComponentAttribute sealed : Attribute

[System.AttributeUsage(System.AttributeTargets.Class, Inherited=true)]
[System.Runtime.InteropServices.ComVisible(false)]
public sealed class PrivateComponentAttribute : Attribute

[<System.AttributeUsage(System.AttributeTargets.Class, Inherited=true)>]
[<System.Runtime.InteropServices.ComVisible(false)>]
type PrivateComponentAttribute = class
    inherit Attribute

Public NotInheritable Class PrivateComponentAttribute
Inherits Attribute

继承

Object

Attribute

PrivateComponentAttribute

属性

AttributeUsageAttribute ComVisibleAttribute

示例

下面的代码示例演示了该 PrivateComponentAttribute 类型的用法。

#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();
    }
};

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();
    }
}

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
End Class

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
End Class

注解

有关使用属性的详细信息，请参阅 “属性”。