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UIElement.IsMeasureValid Property

Gets a value indicating whether the current size returned by layout measure is valid.

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

public bool IsMeasureValid { get; }

Property Value

Type: System.Boolean
true if the measure pass of layout returned a valid and current value; otherwise, false.

You can force measurement and arrangement to be invalidated by calling InvalidateMeasure on this element (or any parent element up the visual tree). This designates the layout for recomposition asynchronously, occurring at a time determined by the layout system. Alternatively, you could make an immediate call to UpdateLayout. However, you should only call UpdateLayout if it is likely that no further invalidations are pending (a large number of unnecessarily forced updates will have performance consequences).

If IsMeasureValid is false, IsArrangeValid must also be false (by the enforced logic of the layout process, arrangement cannot be valid without measurement first being valid).

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1
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