AnimatedListBox / ListView only animating first element

[xamlflair]

AnimatedListBox / ListView only animating first element

[XamlFlair]

@ckpearson did an AnimatedListView give you the same behavior ? If you get a chance to go back to that issue, try testing it with both CanContentScroll="True" and then "False" to see if any help.

[XamlFlair]

@ckpearson would you by any chance have a small sample project that reproduces the issue?

[ckpearson]

@XamlFlair Unfortunately not, however I've (for now) decided to not use the animated list controls, and instead go with an ItemsControl and just have a primary animation on each item there, that's done the trick.

[ckpearson]

Sadly not, AnimatedListView and AnimatedListBox both exhibit the behaviour of only animating the first element to be added.

I didn't test whether adding a bunch of items at the same time would result in those elements being animated.

But I've got a "test" button rigged that inserts an item into the collection each time it's clicked, and in all instances using the Animated(ListView/ListBox) controls only ever animated the first element.

The Loaded events on each element were being fired, so as far as I can tell I'd expect the animations to trigger on each element.

For now though, switching to an ItemsControl and just having each element in there have a Primary animation has fixed my initial issue.

[ckpearson]

@XamlFlair thanks for the suggestion! If I pick those controls up again I'll be sure to give it a go.

My guess is something is off about it determining whether to display the animation, perhaps for whatever reason it thinks they're not visible or something.

Pure speculation at this point sadly.

[XamlFlair]

@ckpearson Thanks! Keep me posted. For reference, this is the method that is responsible for kicking off an item animation when you add one. I will eventually try to repro this and see if a fix is needed:

XamlFlair/XamlFlair.WPF/Extensions/ListBoxExtensions.cs

Line 44 in a1e9acf

internal static void PrepareContainerForItemOverrideEx(this ListBox lb, DependencyObject element, ref bool isFirstItemContainerLoaded)

[XamlFlair]

Closing due to inactivity.