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LicFileLicenseProvider Class

.NET Framework 2.0
Provides an implementation of a LicenseProvider. The provider works in a similar fashion to the Microsoft .NET Framework standard licensing model.

Namespace: System.ComponentModel
Assembly: System (in system.dll)

C#
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VB
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public class LicFileLicenseProvider : LicenseProvider
J#
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public class LicFileLicenseProvider extends LicenseProvider
JScript
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public class LicFileLicenseProvider extends LicenseProvider
XAML
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Not applicable.

The LicFileLicenseProvider offers GetLicense and IsKeyValid methods. The IsKeyValid method determines whether the LicenseKey retrieved by the GetLicense method is valid. When you inherit from this class, you can override the IsKeyValid method to provide your own validation logic.

This class exists to provide similar licensing functionality to COM licensing and uses text license files.

For more information on licensing, see How to: License Components and Controls.

The following example creates a licensed control using the Validate method. It uses LicFileLicenseProvider for the license manager.

C#
C++
VB
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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;
         }
      }
   }
 
}
J#
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import System.*;
import System.ComponentModel.*;
import System.Windows.Forms.*;


// Adds the LicenseProviderAttribute to the control.
/** @attribute LicenseProvider(LicFileLicenseProvider.class)
 */
public class MyControl extends Control
{
    // Creates a new, null license.
    private License license = null;

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

        // Insert code to perform other instance creation tasks here.
    } 
    
    protected void Dispose(boolean disposing)
    {
        if (disposing) {
            if (license != null) {
                license.Dispose();
                license = null;
            }
        }
    } 
}
System.Object
   System.ComponentModel.LicenseProvider
    System.ComponentModel.LicFileLicenseProvider
Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Windows 98, Windows Server 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0, 1.1, 1.0
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Community Content Add
Annotations FAQ
be sure to read the resources section on how to use and deploy license
be sure to view the resources section for understanding how to use the example code
the examples are great from programing point view, but beginners will likely need the resource section to know how to deploy license. additional schemes are are available per one's imagination; CodeProject site may give you more idea
community content on version also gives a quick overview and a very simplistic but concrete approach
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