Freezable.CloneCurrentValue Method

Definition

Namespace:

System.Windows

Assembly:

WindowsBase.dll

Creates a modifiable clone (deep copy) of the Freezable using its current values.

public:
 System::Windows::Freezable ^ CloneCurrentValue();

public System.Windows.Freezable CloneCurrentValue ();

member this.CloneCurrentValue : unit -> System.Windows.Freezable

Public Function CloneCurrentValue () As Freezable

Returns

Freezable

A modifiable clone of the current object. The cloned object's IsFrozen property is false even if the source's IsFrozen property is true.

Remarks

The Clone and CloneCurrentValue methods produce modifiable clones of frozen Freezable objects (the methods also clone Freezable objects that are not frozen). The clone is effectively a deep copy of the current object.

The following table summarizes the differences between the Clone and CloneCurrentValue methods.

Action	Clone method behavior	CloneCurrentValue method behavior
Copying a dependency property that has an expression	The expression is copied, but might no longer resolve. For more information, see Freezable Objects Overview.	The current value of the expression is copied, but not the expression itself.
Copying an animated dependency property	The property's base (non-animated) value is copied. Animations are not copied.	The property's current animated value is copied. Animations are not copied.

Note that unset properties are not copied. If an unset property has a default value that is a frozen Freezable, that property value remains frozen in the otherwise modifiable clone.

Move a Freezable Between Threads

This method can be useful for moving a Freezable between threads. First, make the Freezable unmodifiable by using its Freeze method. Now another thread can access the Freezable and make a local clone that it can access.

Notes to Inheritors

This method uses the CloneCurrentValueCore(Freezable) method to produce the clone; Freezable implementers who override CloneCurrentValueCore(Freezable) must ensure that the copy is not frozen on creation.

See also

• CloneCurrentValueCore(Freezable)