private void MoveTo(int nextValue)
{
var currentIndex = ItemSource.ToList().IndexOf(WorkingItem);
var newIndex = currentIndex + nextValue;
if (newIndex < 0 || newIndex >= ItemSource.Count())
{
return;
}
WorkingItem = ItemSource.ElementAt(newIndex);
OnPropertyChanged(nameof(WorkingItem));
}
/// <summary>
/// Sort the tree view item source collection
/// </summary>
private void Sort()
{
List <DisplayableTreeViewItem> items = ItemSource.ToList <DisplayableTreeViewItem>();
items.Sort((x, y) => CompareItems(x, y));
ItemSource.Clear();
for (int i = 0; i < items.Count; i++)
{
ItemSource.Insert(i, Sort(items[i]));
}
}