public override void Redo(GraphicsList list)
{
// Delete from list all objects kept in cloneList
int n = list.Count;
for ( int i = n - 1; i >= 0; i-- )
{
bool toDelete = false;
DrawObject objectToDelete = list[i];
foreach(DrawObject o in cloneList)
{
if ( objectToDelete.ID == o.ID )
{
toDelete = true;
break;
}
}
if ( toDelete )
{
list.RemoveAt(i);
}
}
}
