Inheritance: System.Windows.Forms.DataGridViewTextBoxCell
        public GridViewPopupColumn(GridViewPopupCell cellTemplate, Control popupCtrl)
        {
            if (cellTemplate == null)
                CellTemplate = new GridViewPopupCell();
            else
                CellTemplate = cellTemplate;

            this.popupCtrl = popupCtrl;
        }
        public GridViewPopupColumn(GridViewPopupCell cellTemplate, Control popupCtrl)
        {
            if (cellTemplate == null)
            {
                CellTemplate = new GridViewPopupCell();
            }
            else
            {
                CellTemplate = cellTemplate;
            }

            this.popupCtrl = popupCtrl;
        }