public void Clear()
{
if (0 < _bindingList.Count)
{
List <object> _deletionList = new List <object>();
foreach (object item in _bindingList)
{
_deletionList.Add(item);
}
_entityCollection.BulkDeleteAll(_deletionList);
// EntityCollection will fire change event which this instance will use to clean up the binding list.
}
}