getting the size of the combobox's popup at runtime

Question

I am trying to get the width and height of a Silverlight ComboBox's dropdown window. Unfortunately ActualWidth and ActualHeight are returning 0 always.

Answer 1

I found a solution to this by myself: you have to set the popup's "IsOpen" to true before measuring, and then set it back to false. It's the only way I could make it work.