In my case I have to change the state of just a few elements that are visible or partially visible of a big list in a wrappanel and I cannot force to animate 100 items instead of 12. So here is a way to make this:
<ScrollViewer x:Name="ScrollContainer" >
<toolkit:WrapPanel x:Name="WrappedButtons"/>
</ScrollViewer>
and the c#
UIElement MyUIE = ScrollContainer;
GeneralTransform gt = MyUIE.TransformToVisual(Application.Current.RootVisual as UIElement);
Rect rect = new Rect(gt.Transform(new Point(0, 0)), MyUIE.RenderSize);
var foundElements = VisualTreeHelper.FindElementsInHostCoordinates(rect, MyUIE);
Type MyType = typeof(Button);
if (foundElements != null)
{
var listBoxItem = foundElements.Where(w => w.GetType().Equals(MyType)).ToList();
TBResult.Text = listBoxItem != null ? listBoxItem.Count.ToString() : String.Empty;
}
And that's all try it, It successfully works.
(Of course as many tips is a mix and changes of stuffs from the internet)
I'm Electronic Engineer, I did my end degree project at Astrophysical Institute and Tech Institute. I'm HP Procurve AIS and ASE ,Microsoft 3.5 MCTS
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