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gridView.Columns["类别"].GroupIndex = 0;
gridView.GroupSummary.Add(DevExpress.Data.SummaryItemType.Count, "类别");gridView.GroupFormat = "{1} {2}"; //默认"{0}: [#image]{1} {2}"; 字段名称:数据 计数=?
gridView.GroupSummary.Add(DevExpress.Data.SummaryItemType.Count, "工作项", gridView.Columns["工作项"]);gridView.GroupSummary[gridView.GroupSummary.Count - 1].DisplayFormat = "小计:{0:N0}";
gridView.OptionsBehavior.AutoExpandAllGroups = true;
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