#912 – Expanding an Expander Will Trigger Layout
September 23, 2013 1 Comment
When you expand an Expander control, you retrigger a layout operation. The parent control then lays out the new Expander control, using the expanded portion.
In the example below, we put two Expander controls in a vertical StackPanel. When we expand the first one, the StackPanel lays out its child controls again, such that the second Expander shifts down below the first.