Exemplo n.º 1
0
        internal virtual void GenerateChildren()
        {
            // This method is typically called during layout, which suspends the dispatcher.
            // Firing an assert causes an exception "Dispatcher processing has been suspended, but messages are still being processed."
            // Besides, the asserted condition can actually arise in practice, and the
            // code responds harmlessly.
            //Debug.Assert(_itemContainerGenerator != null, "Encountered a null _itemContainerGenerator while being asked to generate children.");

            IItemContainerGenerator generator = (IItemContainerGenerator)_itemContainerGenerator;
            if (generator != null)
            {
                using (generator.StartAt(new GeneratorPosition(-1, 0), GeneratorDirection.Forward))
                {
                    UIElement child;
                    while ((child = generator.GenerateNext() as UIElement) != null)
                    {
                        _uiElementCollection.AddInternal(child);
                        generator.PrepareItemContainer(child);
                    }
                }
            }
        }
Exemplo n.º 2
0
 // This is internal as an optimization for VirtualizingStackPanel (so it doesn't need to re-query InternalChildren repeatedly)
 internal static void AddInternalChild(UIElementCollection children, UIElement child)
 {
     children.AddInternal(child);
 }
Exemplo n.º 3
0
 // This is internal as an optimization for VirtualizingStackPanel (so it doesn't need to re-query InternalChildren repeatedly)
 internal static void AddInternalChild(UIElementCollection children, UIElement child)
 {
     children.AddInternal(child);
 }