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AttachedProperty Class

Used in order to associate or attach additional information to the instance of an object.


Namespace:  System.Activities.Presentation.Model
Assembly:  System.Activities.Presentation (in System.Activities.Presentation.dll)

public abstract class AttachedProperty

The AttachedProperty type exposes the following members.

Protected methodAttachedPropertyInitializes a new instance of the AttachedProperty class.

Public propertyIsBrowsableGets or sets a Boolean value that indicates whether the AttachedProperty is browsable.
Public propertyIsReadOnlyGets a value that determines whether the attached property is read-only.
Public propertyNameGets or sets the name of the property.
Public propertyOwnerTypeGets or sets the owner type.
Public propertyTypeGets the type.

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 methodGetTypeGets the Type of the current instance. (Inherited from Object.)
Public methodGetValueRetrieves the value of the specified model item.
Protected methodMemberwiseCloneCreates a shallow copy of the current Object. (Inherited from Object.)
Public methodNotifyPropertyChangedCreates a notification that indicates that the specified model item has changed.
Public methodResetValueResets the specified model item to the default value.
Public methodSetValueSets the specified model item to the specified value.
Public methodToStringReturns a string that represents the current object. (Inherited from Object.)

This is used by the Windows Workflow Designer in order to keep track of interesting pieces of data during an editing session for data that is otherwise transient, that will (mostly) be discarded at the end of an editing session. AttachedProperty is useful as items in the View can bind to the values and react to changes. For instance, this is the way that the selected item template is displayed (it keys off of an attached property for selection).

.NET Framework

Supported in: 4.6, 4.5, 4

.NET Framework Client Profile

Supported in: 4

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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