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When overridden in a derived class, measures the size in layout required for child elements and determines a size for the FrameworkElement-derived class.
protected override Size MeasureOverride(Size availableSize)
Protected Overrides Function MeasureOverride(availableSize As Size) As Size
Type | Name | Description |
---|---|---|
Size | availableSize | The available size that this element can give to child elements. Infinity can be specified as a value to indicate that the element will size to whatever content is available. |
Type | Description |
---|---|
Size | The size that this element determines it needs during layout, based on its calculations of child element sizes. |
The DropDownWindow only returns a ( 0, 0) size.