LicenseProviderAttribute Klas

Definitie

public ref class LicenseProviderAttribute sealed : Attribute

[System.AttributeUsage(System.AttributeTargets.Class, AllowMultiple=false, Inherited=false)]
public sealed class LicenseProviderAttribute : Attribute

[<System.AttributeUsage(System.AttributeTargets.Class, AllowMultiple=false, Inherited=false)>]
type LicenseProviderAttribute = class
    inherit Attribute

Public NotInheritable Class LicenseProviderAttribute
Inherits Attribute

Overname

Object

Attribute

LicenseProviderAttribute

Kenmerken

AttributeUsageAttribute

Voorbeelden

In het volgende codevoorbeeld wordt de LicFileLicenseProvider als licentieprovider gebruikt voor MyControl.

[LicenseProvider(LicFileLicenseProvider::typeid)]
ref class MyControl: public Control
{
protected:

   // Insert code here.
   ~MyControl()
   {
      /* All components must dispose of the licenses they grant. 
               * Insert code here to dispose of the license. */
   }
};

[LicenseProvider(typeof(LicFileLicenseProvider))]
public class MyControl : Control
{
    // Insert code here.

    protected override void Dispose(bool disposing)
    {
        /* All components must dispose of the licenses they grant. 
         * Insert code here to dispose of the license. */
    }
}

<LicenseProvider(GetType(LicFileLicenseProvider))> _
Public Class MyControl
    Inherits Control
    
    ' Insert code here.
    Protected Overrides Sub Dispose(ByVal disposing As Boolean)
        ' All components must dispose of the licenses they grant.
        ' Insert code here to dispose of the license.
    End Sub        

End Class

In het volgende codevoorbeeld wordt een exemplaar van de MyControl klasse gemaakt. Vervolgens worden de kenmerken voor de klasse opgehaald en wordt de naam afgedrukt van de licentieprovider die wordt gebruikt door myNewControl.

int main()
{
   // Creates a new component.
   MyControl^ myNewControl = gcnew MyControl;

   // Gets the attributes for the component.
   AttributeCollection^ attributes = TypeDescriptor::GetAttributes( myNewControl );

   /* Prints the name of the license provider by retrieving the LicenseProviderAttribute 
        * from the AttributeCollection. */
   LicenseProviderAttribute^ myAttribute = dynamic_cast<LicenseProviderAttribute^>(attributes[ LicenseProviderAttribute::typeid ]);
   Console::WriteLine( "The license provider for this class is: {0}", myAttribute->LicenseProvider );
   return 0;
}

public static int Main()
{
    // Creates a new component.
    MyControl myNewControl = new();

    // Gets the attributes for the component.
    AttributeCollection attributes = TypeDescriptor.GetAttributes(myNewControl);

    /* Prints the name of the license provider by retrieving the LicenseProviderAttribute 
     * from the AttributeCollection. */
    LicenseProviderAttribute myAttribute = (LicenseProviderAttribute)attributes[typeof(LicenseProviderAttribute)];
    Console.WriteLine("The license provider for this class is: " + myAttribute.LicenseProvider.ToString());

    return 0;
}

Public Shared Function Main() As Integer
    ' Creates a new component.
    Dim myNewControl As New MyControl()
    
    ' Gets the attributes for the component.
    Dim attributes As AttributeCollection = TypeDescriptor.GetAttributes(myNewControl)
    
    ' Prints the name of the license provider by retrieving the LicenseProviderAttribute 
    ' from the AttributeCollection. 
    Dim myAttribute As LicenseProviderAttribute = _
        CType(attributes(GetType(LicenseProviderAttribute)), LicenseProviderAttribute)
        
    Console.WriteLine(("The license provider for this class is: " & _
        myAttribute.LicenseProvider.ToString()))
    Return 0
End Function

Opmerkingen

Wanneer u een onderdeel maakt dat u een licentie wilt geven, moet u het LicenseProvider opgeven door het onderdeel te markeren met een LicenseProviderAttribute.

Gebruik de LicenseProvider eigenschap om de Type eigenschap op te halen.LicenseProvider

Zie Kenmerken voor meer informatie over kenmerken. Zie Voor meer informatie over licenties : Licentieonderdelen en -besturingselementen.

Zie ook

• License
• LicenseContext
• LicenseException
• LicenseManager
• LicenseProvider
• LicFileLicenseProvider
• LicenseUsageMode