.NET Windows Forms in a Nutshell

Name

LicenseManager

Synopsis

This class offers a set of static utility functions to support the licensing of components.

You can retrieve the CurrentContext and the UsageMode (to determine whether this is a runtime or design-time context). You can lock and unlock the context for a particular object, effectively disabling the ability to get license information for that object, using the LockContext( ) and UnlockContext() methods.

To determine whether a particular object is licensed, you can use the IsLicensed() method. IsValid( ) and Validate() determine whether a valid license for an object can be granted. These methods use the LicenseProvider for the class to obtain a validated license.

Typically, a licensable class is adorned with the LicenseProviderAttribute which indicates the type of LicenseProvider to use. It then makes a call to Validate() in its constructor, to ensure that a suitable license is present for the current context.

public sealed class LicenseManager {

// Public Static Properties

   public static LicenseContext CurrentContext{set; get; }

   public static LicenseUsageMode UsageMode{get; }

// Public Static Methods

   public static object CreateWithContext(Type type, LicenseContext creationContext);

   public static object CreateWithContext(Type type, LicenseContext creationContext, object[] args);

   public static bool IsLicensed(Type type);

   public static bool IsValid(Type type);

   public static bool IsValid(Type type, object instance, out License license);

   public static void LockContext ...