LicFileLicenseProvider
Class
Definition
Provides an implementation of a LicenseProvider. The provider works in a similar fashion to the Microsoft .NET Framework standard licensing model.
public class LicFileLicenseProvider : System.ComponentModel.LicenseProvider
- Inheritance
Inherited Members
System.Object
Examples
The following example creates a licensed control using the Validate method. It uses LicFileLicenseProvider for the license manager.
// 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
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
Remarks
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.
Constructors
| LicFileLicenseProvider() |
Initializes a new instance of the LicFileLicenseProvider class. |
Methods
| GetKey(Type) |
Returns a key for the specified type. |
| GetLicense(LicenseContext, Type, Object, Boolean) |
Returns a license for the instance of the component, if one is available. |
| IsKeyValid(String, Type) |
Determines whether the key that the GetLicense(LicenseContext, Type, Object, Boolean) method retrieves is valid for the specified type. |