dev中gridcontrol中改变符合某一条件的行的背景色

 DevExpress.XtraGrid.StyleFormatCondition cn;
            cn = new DevExpress.XtraGrid.StyleFormatCondition(DevExpress.XtraGrid.FormatConditionEnum.Equal, gridView1.Columns["列名"], null, 值, 值, true);
            cn.Appearance.BackColor = Color.Gray;
            gridView1.FormatConditions.Add(cn);