[DevExpress] 그리드의 체크박스 한개만 선택 할때

그리드에 있는 checkbox 한개만 선택되게 할 때

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private void advBandedGridViewMtrl_CellValueChanging(object sender, DevExpress.XtraGrid.Views.Base.CellValueChangedEventArgs e) {     if (e.Column.FieldName == "BASE_CUST_YN")     {         if (e.Value.ToString() == "Y")         {             for (int i = 0; i < this.advBandedGridViewMtrl.RowCount; i++)                 if (i != e.RowHandle)                                    (this.advBandedGridViewMtrl.GetDataRow(i) as DataRow)["BASE_CUST_YN"] = "N";         }     }   }