LicenseProvider Class
Provides the abstract base class for implementing a license provider.
Namespace: System.ComponentModel
Assembly: System (in System.dll)
The LicenseProvider type exposes the following members.
| Name | Description | |
|---|---|---|
 | Equals(Object) | Determines whether the specified object is equal to the current object. (Inherited from Object.) |
 | Finalize | Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.) |
| GetHashCode | Serves as a hash function for a particular type. (Inherited from Object.) |
| GetLicense | 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. |
| GetType | Gets the Type of the current instance. (Inherited from Object.) |
| MemberwiseClone | Creates a shallow copy of the current Object. (Inherited from Object.) |
| ToString | Returns a string that represents the current object. (Inherited from Object.) |
 Note |
|---|
The HostProtectionAttribute attribute applied to this type or member 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. |
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.
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; } } } }
Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
