PrivateComponentAttribute Class
Definition
Important
Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.
Identifies a component as a private component that is only seen and activated by components in the same application. This class cannot be inherited.
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
- Inheritance
- Attributes
Examples
The following code example shows the use of the PrivateComponentAttribute type.
#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
Remarks
For more information about using attributes, see Attributes.
Constructors
PrivateComponentAttribute() |
Initializes a new instance of the PrivateComponentAttribute class. |
Properties
TypeId |
When implemented in a derived class, gets a unique identifier for this Attribute. (Inherited from Attribute) |
Methods
Equals(Object) |
Returns a value that indicates whether this instance is equal to a specified object. (Inherited from Attribute) |
GetHashCode() |
Returns the hash code for this instance. (Inherited from Attribute) |
GetType() |
Gets the Type of the current instance. (Inherited from Object) |
IsDefaultAttribute() |
When overridden in a derived class, indicates whether the value of this instance is the default value for the derived class. (Inherited from Attribute) |
Match(Object) |
When overridden in a derived class, returns a value that indicates whether this instance equals a specified object. (Inherited from Attribute) |
MemberwiseClone() |
Creates a shallow copy of the current Object. (Inherited from Object) |
ToString() |
Returns a string that represents the current object. (Inherited from Object) |
Explicit Interface Implementations
_Attribute.GetIDsOfNames(Guid, IntPtr, UInt32, UInt32, IntPtr) |
Maps a set of names to a corresponding set of dispatch identifiers. (Inherited from Attribute) |
_Attribute.GetTypeInfo(UInt32, UInt32, IntPtr) |
Retrieves the type information for an object, which can be used to get the type information for an interface. (Inherited from Attribute) |
_Attribute.GetTypeInfoCount(UInt32) |
Retrieves the number of type information interfaces that an object provides (either 0 or 1). (Inherited from Attribute) |
_Attribute.Invoke(UInt32, Guid, UInt32, Int16, IntPtr, IntPtr, IntPtr, IntPtr) |
Provides access to properties and methods exposed by an object. (Inherited from Attribute) |