// ================== AllowEdit
        private void AllowEdit(Boolean llMode=false)
        {
            if (source != null && source.List != null)
            {
                DataView oDataView = (DataView)source.List;
                oDataView.AllowEdit = llMode;
            }
        }
        // ================== AllowNew
        private void AllowNew(Boolean llMode = false)
        {
            if (source != null && source.List != null)
            {
                source.AllowNew = llMode;
            }
        }