DesignSurfaceExtensionAttribute Class

Artigo
10/31/2012

Notifies the Visual Studio environment that a VSPackage provides a Type implementing a service to customize or extend services provided by any implementation of DesignSurface at designer load time.

Inheritance Hierarchy

System.Object
  System.Attribute
    Microsoft.VisualStudio.Shell.RegistrationAttribute
      Microsoft.VisualStudio.Shell.Design.DesignSurfaceExtensionAttribute

Namespace: Microsoft.VisualStudio.Shell.Design
Assembly: Microsoft.VisualStudio.Shell.Design (in Microsoft.VisualStudio.Shell.Design.dll)

Syntax

'Declaração
<AttributeUsageAttribute(AttributeTargets.Class, AllowMultiple := True, Inherited := True)> _
Public NotInheritable Class DesignSurfaceExtensionAttribute _
    Inherits RegistrationAttribute

[AttributeUsageAttribute(AttributeTargets.Class, AllowMultiple = true, Inherited = true)]
public sealed class DesignSurfaceExtensionAttribute : RegistrationAttribute

The DesignSurfaceExtensionAttribute type exposes the following members.

Constructors

	Name	Description
	DesignSurfaceExtensionAttribute	Creates a new instance of the DesignSurfaceExtensionAttribute class specifying a given object as providing a VSPackage's implementation of DesignSurfaceExtension.

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Properties

	Name	Description
	ExtensionType	The Type of the object registered as providing a VSPackage with an implementation of DesignSurfaceExtension to customize design surfaces.
	LoadAtIdle	Controls when, relative to the loading of a designer used by a VSPackage, the extensions provided by the implementation of the DesignSurfaceExtensionAttribute registered by DesignSurfaceExtensionAttribute are installed.
	TypeId	Gets the current instance of this attribute. (Inherited from RegistrationAttribute.)

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Methods

	Name	Description
	Equals	Infrastructure. Returns a value that indicates whether this instance is equal to a specified object. (Inherited from Attribute.)
	GetHashCode	Returns the hash code for this instance. (Inherited from Attribute.)
	GetType	Gets the Type of the current instance. (Inherited from Object.)
	IsDefaultAttribute	When overridden in a derived class, indicates whether the value of this instance is the default value for the derived class. (Inherited from Attribute.)
	Match	When overridden in a derived class, returns a value that indicates whether this instance equals a specified object. (Inherited from Attribute.)
	Register	Registers the design surface extension. (Overrides RegistrationAttribute.Register(RegistrationAttribute.RegistrationContext).)
	ToString	Returns a string that represents the current object. (Inherited from Object.)
	Unregister	Removes the design surface extension registry key. (Overrides RegistrationAttribute.Unregister(RegistrationAttribute.RegistrationContext).)

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Explicit Interface Implementations

	Name	Description
	_Attribute.GetIDsOfNames	Maps a set of names to a corresponding set of dispatch identifiers. (Inherited from Attribute.)
	_Attribute.GetTypeInfo	Retrieves the type information for an object, which can be used to get the type information for an interface. (Inherited from Attribute.)
	_Attribute.GetTypeInfoCount	Retrieves the number of type information interfaces that an object provides (either 0 or 1). (Inherited from Attribute.)
	_Attribute.Invoke	Provides access to properties and methods exposed by an object. (Inherited from Attribute.)

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Remarks

Attribute Context

Applies to	Classes providing VSPackages by implementing the IVsPackage interface or the Package interface.
Repeatable	No
Required attributes	An instance each of ProvideObjectAttribute and ProvideServiceAttribute constructed with the Type of the class registered by the DesignSurfaceExtensionAttribute as implementing the DesignSurfaceExtension.
Invalid attributes	None

This Attribute specifies a Type as implementing a service providing customization or extension of the services provided by any implementation of DesignSurface used by the VSPackage.

DesignSurfaceExtensionAttribute is only used for registration purposes and does not affect how code behaves at runtime.

Instances of this Attribute should only be applied to classes implementing Package for a VSPackage.

Examples

The example below declares that the VSPackage CustomDesigner, provided the class CustomSurfaceExt to customize the design surface it uses.

[ProvideServiceAttribute(typeof(CustomSurfaceExt))]
[ProvideObjectAttribute(typeof(CustomSurfaceExt))]
[DesignSurfaceExtension(typeof(CustomSurfaceExt))] 
class CustomDesigner : Package

Thread Safety

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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