在 Excel 中:数据/组和大纲/设置...
在代码中:
range.Group(oMissing, oMissing, oMissing, oMissing);
//for rows
worksheet.Outline.SummaryRow = Excel.XlSummaryRow.xlSummaryAbove;
//for columns
worksheet.Outline.SummaryColumn = Excel.XlSummaryColumn.xlSummaryOnLeft;
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