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Asked: 2026-05-10T16:05:03+00:00

I have a DataGrid, populated with objects in an ArrayCollection. After updating one of

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I have a DataGrid, populated with objects in an ArrayCollection. After updating one of the objects’ fields, I want the screen to update. The data source is not bindable, because I’m constructing it at runtime (and I don’t understand how to make it bindable on the fly yet — that’s another question).

In this situation, if I call InvalidateDisplayList() on the grid nothing seems to happen. But if I call invalidateList(), the updates happen. (And it’s very smooth too — no flicker like I would expect from invalidating a window in WIN32.)

So the question: what is the difference between InvalidateList and InvalidateDisplayList? From the documentation it seems like either one should work.

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1 Answer

  1. invalidateList tells the component that the data has changed, and it needs to reload it and re-render it.

    invalidateDisplayList tells the component that it needs to redraw itself (but not necessarily reload its data).

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