Freezable.Clone Method ()


Creates a modifiable clone of the Freezable, making deep copies of the object's values. When copying the object's dependency properties, this method copies expressions (which might no longer resolve) but not animations or their current values.

Namespace:   System.Windows
Assembly:  WindowsBase (in WindowsBase.dll)

member Clone : unit -> Freezable

Return Value

Type: System.Windows.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.

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.


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.

This method can be useful for moving a Freezable between threads. First, make the Freezable unmodifiable by calling 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 CloneCore to produce the clone. To modify the behavior of this method in a derived class, override the CloneCore method.

.NET Framework
Available since 3.0
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