LicFileLicenseProvider Class

Reference

Definition

Namespace:: System.ComponentModel

Assembly:: System.ComponentModel.TypeConverter.dll

Assembly:: System.dll

Assembly:: netstandard.dll

Source:: LicFileLicenseProvider.cs

Source:: LicFileLicenseProvider.cs

Source:: LicFileLicenseProvider.cs

Important

Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

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

public ref class LicFileLicenseProvider : System::ComponentModel::LicenseProvider

public class LicFileLicenseProvider : System.ComponentModel.LicenseProvider

type LicFileLicenseProvider = class
    inherit LicenseProvider

Public Class LicFileLicenseProvider
Inherits LicenseProvider

Inheritance: Object

LicenseProvider
LicFileLicenseProvider

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.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

Equals(Object)	Determines whether the specified object is equal to the current object. (Inherited from Object)
GetHashCode()	Serves as the default hash function. (Inherited from Object)
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.
GetType()	Gets the Type of the current instance. (Inherited from Object)
IsKeyValid(String, Type)	Determines whether the key that the GetLicense(LicenseContext, Type, Object, Boolean) method retrieves is valid for the specified type.
MemberwiseClone()	Creates a shallow copy of the current Object. (Inherited from Object)
ToString()	Returns a string that represents the current object. (Inherited from Object)

Applies to

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