gridView 例自动求合计

 //--.gridView1例自动合计（直接加代码就可用）
                this.gridView1.OptionsView.ShowFooter = true;
                gridView1.Columns["Money"].SummaryItem.SummaryType = DevExpress.Data.SummaryItemType.Sum;
                gridView1.Columns["Money"].SummaryItem.DisplayFormat = "￥{0:N2}";
             // gridView1.Columns["Money"].SummaryItem.DisplayFormat = "合计{0:N2}";