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Popup.MeasureOverride Method

Determines the required size of the Popup content within the visual tree of the logical parent.

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

protected override Size MeasureOverride(
	Size availableSize
)

Parameters

availableSize
Type: System.Windows.Size
The available size that this element can give to the child. You can use infinity as a value to indicate that the element can size to whatever content is available.

Return Value

Type: System.Windows.Size
A Size structure that has the Height and Width properties both equal to zero (0).

This method always returns a Size that has a width and height of zero (0), because Popup content is not located in the visual tree of its logical parent or PlacementTarget. The child content is created in a different window that has its own visual tree.

.NET Framework

Supported in: 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
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