Popup.MeasureOverride(Size) Method

Definition

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

C#
protected override System.Windows.Size MeasureOverride(System.Windows.Size availableSize);

Parameters

availableSize
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.

Returns

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

Remarks

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.

Applies to

Product Versions
.NET Framework 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
Windows Desktop 3.0, 3.1, 5, 6, 7, 8, 9