LicenseProvider Kelas

public ref class LicenseProvider abstract

public abstract class LicenseProvider

type LicenseProvider = class

Public MustInherit Class LicenseProvider

Warisan

Object

LicenseProvider

Turunan

System.ComponentModel.LicFileLicenseProvider

Contoh kode berikut membuat kontrol berlisensi menggunakan Validate metode . Ini menggunakan LicenseProvider yang diimplementasikan oleh LicFileLicenseProvider kelas .

// Adds the LicenseProviderAttribute to the control.

[LicenseProvider(LicFileLicenseProvider::typeid)]
public ref class MyControl: public Control
{
   // Creates a new, null license.
private:
   License^ license;

public:
   MyControl()
   {
      
      // Adds Validate to the control's constructor.
      license = LicenseManager::Validate( MyControl::typeid, this );

      // Insert code to perform other instance creation tasks here.
   }

public:
   ~MyControl()
   {
      if ( license != nullptr )
      {
         delete license;
         license = nullptr;
      }
   }
};

using System;
using System.ComponentModel;
using System.Windows.Forms;

// Adds the LicenseProviderAttribute to the control.
[LicenseProvider(typeof(LicFileLicenseProvider))]
public class MyControl : Control 
{
 
   // Creates a new, null license.
   private License license = null;
 
   public MyControl () 
   {
 
      // Adds Validate to the control's constructor.
      license = LicenseManager.Validate(typeof(MyControl), this);
 
      // Insert code to perform other instance creation tasks here.
   }
 
   protected override void Dispose(bool disposing) 
   {
      if(disposing)
      {
         if (license != null) 
         {
            license.Dispose();
            license = null;
         }
      }
   }
}

Imports System.ComponentModel
Imports System.Windows.Forms

' Adds the LicenseProviderAttribute to the control.
<LicenseProvider(GetType(LicFileLicenseProvider))> _
Public Class MyControl
    Inherits Control
    
    ' Creates a new, null license.
    Private license As License = Nothing    
    
    Public Sub New()        
    
        ' Adds Validate to the control's constructor.
        license = LicenseManager.Validate(GetType(MyControl), Me)

        ' Insert code to perform other instance creation tasks here.
        
    End Sub
    
    Protected Overrides Sub Dispose(ByVal disposing As Boolean)

        If disposing Then
            If (license IsNot Nothing) Then
                license.Dispose()
                license = Nothing
            End If
        End If

    End Sub    
    
End Class

Ketika Anda mewarisi dari LicenseProvider, Anda harus mengambil GetLicense(LicenseContext, Type, Object, Boolean) alih metode .

Lihat LicFileLicenseProvider untuk implementasi kelas ini. Untuk informasi selengkapnya tentang lisensi, lihat Cara: Komponen dan Kontrol Lisensi.

• License
• LicenseContext
• LicenseException
• LicenseManager
• LicenseProviderAttribute
• LicFileLicenseProvider
• LicenseUsageMode