public static void IsDragClickStartedPropertyChanged(DependencyObject o, DependencyPropertyChangedEventArgs e)
{
bool isDragClickStarted = DragSelectionHelper.GetIsDragClickStarted(DragSelectionHelper.ListBox);
// if click has been drag click has started, clear the current selected items and start drag selection operation again
if (isDragClickStarted)
{
DragSelectionHelper.ListBox.SelectedItems.Clear();
}
}
public static void IsDragSelectingPropertyChanged(DependencyObject o, DependencyPropertyChangedEventArgs e)
{
StackPanel item = o as StackPanel;
bool clickInitiated = DragSelectionHelper.GetIsDragClickStarted(DragSelectionHelper.ListBox);
// this is where the item.Parent was null, it was supposed to be the ListBox, I guess it's null because items are not
// really StackPanels but are wells
if (clickInitiated)
{
bool isDragSelecting = DragSelectionHelper.GetIsDragSelecting(item);
if (isDragSelecting)
{
// using the ListBox static reference because could not get to it through the item.Parent property
DragSelectionHelper.ListBox.SelectedItems.Add(item);
}
}
}