public static void RemoveChapter(TabViewItem item)
{
int index = IndexOfItem(item);
Debug.Assert(index >= 0);
CustomTabViewItems.RemoveAt(index);
}
public static void AddChapter(CustomTabViewItem customTabViewItem)
{
Debug.Assert(IndexOfItem(customTabViewItem.TabItem) < 0);
CustomTabViewItems.Add(customTabViewItem);
}
