ActualWidth Property

FrameworkElement.ActualWidth Property


Gets the rendered width of this element.

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

public double ActualWidth { get; }

Property Value

Type: System.Double

The element's width, as a value in device-independent units (1/96th inch per unit). The default value is 0 (zero).

This property is a calculated value based on other width inputs, and the layout system. The value is set by the layout system itself, based on an actual rendering pass, and may therefore lag slightly behind the set value of properties such as Width that are the basis of the input change.

Because ActualWidth is a calculated value, you should be aware that there could be multiple or incremental reported changes to it as a result of various operations by the layout system. The layout system may be calculating required measure space for child elements, constraints by the parent element, and so on.

Although you cannot set this property from XAML, you can base a Trigger upon its value in a style.

Identifier field


Metadata properties set to true


Legacy Code Example

The following example displays various width properties.

Code snippet is not found. Confirm that the code snippet name 'WidthMinWidthMaxWidth' is correct.

.NET Framework
Available since 3.0
Available since 2.0
Windows Phone Silverlight
Available since 7.0
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