Layout System in WPF

Question

I want to trigger the Measure/Arrange layout pass of an ItemsControl manually in code behind without user interaction. Is it possible? If yes, How? I tried InvalidateMeasure(), UpdateLayout(), but no use.

Answer 1

Use the InvalidateVisual method to invoke a re-render:

Invalidates the rendering of the element, and forces a complete new layout pass. OnRender is called after the layout cycle is completed.

However, as Microsoft recommends that this should scarcely be used manually in applications, there is likely another solution to your problem (such as proper use of dependency properties, for instance), if we knew it.