Imports System
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

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;
         }
      }
   }

}

// 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;
      }
   }
};