LicenseContext Class

Specifies when you can use a licensed object and provides a way of obtaining additional services needed to support licenses running within its domain.

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

[<HostProtectionAttribute(SecurityAction.LinkDemand, SharedState = true)>]
type LicenseContext =  
    class 
        interface IServiceProvider 
    end

The LicenseContext type exposes the following members.

  NameDescription
Public methodLicenseContextInitializes a new instance of the LicenseContext class.
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  NameDescription
Public propertyUsageModeWhen overridden in a derived class, gets a value that specifies when you can use a license.
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  NameDescription
Public methodEquals(Object)Determines whether the specified object is equal to the current object. (Inherited from Object.)
Protected methodFinalizeAllows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.)
Public methodGetHashCodeServes as the default hash function. (Inherited from Object.)
Public methodGetSavedLicenseKeyWhen overridden in a derived class, returns a saved license key for the specified type, from the specified resource assembly.
Public methodGetServiceGets the requested service, if it is available.
Public methodGetTypeGets the Type of the current instance. (Inherited from Object.)
Protected methodMemberwiseCloneCreates a shallow copy of the current Object. (Inherited from Object.)
Public methodSetSavedLicenseKeyWhen overridden in a derived class, sets a license key for the specified type.
Public methodToStringReturns a string that represents the current object. (Inherited from Object.)
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This class provides the default LicenseContext. It implements only run-time support and does not support saved license keys.

NoteNote

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.

Notes to Inheritors

If you want to implement design-time license support, you must inherit from this class, and override the following members: UsageMode, GetSavedLicenseKey, GetService, and SetSavedLicenseKey. If you want to implement saved license keys, override the GetSavedLicenseKey and SetSavedLicenseKey methods.

For more information about licensing, see How to: License Components and Controls.

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8.1, Windows Server 2012 R2, 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.

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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