/// <summary>
/// Copy items from source to destination.
/// </summary>
/// <param name="sourceItem">The source item.</param>
/// <param name="destinationItem">The destination item.</param>
/// <param name="itemList">Children at the source.</param>
/// <param name="cloneList">Cloned children at the destination.</param>
protected override void DragDropCopy(object sourceItem, object destinationItem, IList itemList, IList cloneList)
{
Debug.Assert(itemList.Count > 0);
TItem DestinationItem = (TItem)destinationItem;
TCollection DestinationCollection = (TCollection)DestinationItem.Children;
#if NETCOREAPP3_1
foreach (ICloneable?ChildItem in itemList)
{
if (ChildItem != null)
{
TItem Clone = (TItem)ChildItem.Clone();
Clone.ChangeParent(DestinationItem);
DestinationCollection.Add(Clone);
cloneList.Add(Clone);
}
}
#else
foreach (ICloneable ChildItem in itemList)
{
TItem Clone = (TItem)ChildItem.Clone();
Clone.ChangeParent(DestinationItem);
DestinationCollection.Add(Clone);
cloneList.Add(Clone);
}
#endif
DestinationCollection.Sort();
}
protected override void DragDropCopy(object sourceItem, object destinationItem, IList itemList, IList cloneList)
{
TCollection DestinationCollection = (TCollection)((TItem)destinationItem).Children;
if (itemList != null && cloneList != null)
{
foreach (ICloneable ChildItem in itemList)
{
TItem Clone = (TItem)ChildItem.Clone();
Clone.ChangeParent((TItem)destinationItem);
DestinationCollection.Add(Clone);
cloneList.Add(Clone);
}
}
DestinationCollection.Sort();
}