Freezable.Clone-Methode

public Freezable Clone ()

public Freezable Clone ()

public function Clone () : Freezable

Sie können diese Methoden nicht in XAML verwenden.

Rückgabewert

The Clone and CloneCurrentValue methods produce modifiable clones of frozen Freezable objects (they will 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.

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

Move a Freezable Between Threads

Hinweise zur Implementierung: This method uses CloneCore to produce the clone. To modify the behavior of this method in a derived class, override the CloneCore method.

This example shows how to use the Clone method to create a writable copy of a read-only Freezable.

After a Freezable object is marked as read-only ("frozen"), you cannot modify it. However, you can use the Clone method to create a modifiable clone of the frozen object.

The following example creates a modifiable clone of a frozen SolidColorBrush object.

Button myButton = new Button();
SolidColorBrush myBrush = new SolidColorBrush(Colors.Yellow);

// Freezing a Freezable before it provides
// performance improvements if you don't
// intend on modifying it. 
if (myBrush.CanFreeze)
{
    // Makes the brush unmodifiable.
    myBrush.Freeze();
}
            

myButton.Background = myBrush;  

// If you need to modify a frozen brush,
// the Clone method can be used to
// create a modifiable copy.
SolidColorBrush myBrushClone = myBrush.Clone();

// Changing myBrushClone does not change
// the color of myButton, because its
// background is still set by myBrush.
myBrushClone.Color = Colors.Red;

// Replacing myBrush with myBrushClone
// makes the button change to red.
myButton.Background = myBrushClone;

For more information about Freezable objects, see the Freezable Objects Overview.

Microsoft .NET Framework 3.0 wird unter Windows Vista, Microsoft Windows XP SP2 und Windows Server 2003 SP1 unterstützt.

.NET Framework