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Using Freezable Objects for Enhanced Performance

Background information

WPF provides the Freezable class for objects that can be made immutable to optimize performance, such as brushes, pens, and transforms.

Setting Objects as Freezable

When an object is frozen, it becomes immutable, which reduces memory usage and allows WPF to optimize rendering.

SolidColorBrush myBrush = new SolidColorBrush(Colors.Blue);
if (myBrush.CanFreeze)
{
    myBrush.Freeze();
}

Frozen objects cannot be modified, so only freeze objects that don’t require changes.

Benefits of Freezable Objects

Freezable objects improve rendering speed, especially for large visuals or repeated animations. This technique is particularly useful in complex UIs with many reused resources.