LicenseProvider Class

 

Provides the abstract base class for implementing a license provider.

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

System.Object
  System.ComponentModel.LicenseProvider
    System.ComponentModel.LicFileLicenseProvider

<HostProtectionAttribute(SecurityAction.LinkDemand, SharedState := True)>
Public MustInherit Class LicenseProvider

NameDescription
System_CAPS_protmethodLicenseProvider()

Initializes a new instance of the LicenseProvider class.

NameDescription
System_CAPS_pubmethodEquals(Object)

Determines whether the specified object is equal to the current object.(Inherited from Object.)

System_CAPS_protmethodFinalize()

Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection.(Inherited from Object.)

System_CAPS_pubmethodGetHashCode()

Serves as the default hash function. (Inherited from Object.)

System_CAPS_pubmethodGetLicense(LicenseContext, Type, Object, Boolean)

When overridden in a derived class, gets a license for an instance or type of component, when given a context and whether the denial of a license throws an exception.

System_CAPS_pubmethodGetType()

Gets the Type of the current instance.(Inherited from Object.)

System_CAPS_protmethodMemberwiseClone()

Creates a shallow copy of the current Object.(Inherited from Object.)

System_CAPS_pubmethodToString()

Returns a string that represents the current object.(Inherited from Object.)

Notes to Inheritors:

When you inherit from LicenseProvider, you must override the GetLicense method.

See LicFileLicenseProvider for an implementation of this class. For more information on licensing, see How to: License Components and Controls.

The following code example creates a licensed control using the Validate method. It uses a LicenseProvider that is implemented by the LicFileLicenseProvider class.

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

.NET Framework
Available since 1.1

Any public static ( Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

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