License Class

Provides the abstract base class for all licenses. A license is granted to a specific instance of a component.

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

public abstract class License : IDisposable
public abstract class License implements IDisposable
public abstract class License implements IDisposable
Not applicable.

All components must call Dispose for the licenses they grant when the component is disposed or finalized.


The HostProtectionAttribute attribute applied to this class has the following Resources property value: SharedState. The HostProtectionAttribute does not affect desktop applications (which are typically started by double-clicking an icon, typing a command, or entering a URL in a browser). For more information, see the HostProtectionAttribute class or SQL Server Programming and Host Protection Attributes.

Notes to Inheritors: When you inherit from License, you must override the following members: LicenseKey and Dispose. For more information on licensing, see How to: License Components and Controls.


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