Hi,
I noticed that when you try to remove items via Commands, the items are still intact in the UI. To repro this issue, please do the following in the sample:
public void Execute(object parameter)
{
MoviesInCategory group = parameter as MoviesInCategory;
if (group != null)
{
/*
for (int i = 0; i < 5; i++)
{
group.Add(Movie.CreateRandom(group.Key));
}
*/
group.Clear();
}
}