问题是由于
ClosedXML 的实现漏洞引起的。
可以轻松地通过使用以下代码片段(修改版的数据透视表示例)并在 Excel 中打开生成的文件来复现这个问题:
static void CreateTestPivotTables(string filePath)
{
var wb = new XLWorkbook();
var wsData = wb.Worksheets.Add("Data");
wsData.Cell("A1").Value = "Category";
wsData.Cell("A2").Value = "A";
wsData.Cell("A3").Value = "B";
wsData.Cell("A4").Value = "B";
wsData.Cell("B1").Value = "Number";
wsData.Cell("B2").Value = 100;
wsData.Cell("B3").Value = 150;
wsData.Cell("B4").Value = 75;
var source = wsData.Range("A1:B4");
for (int i = 1; i <= 2; i++)
{
var name = "PT" + i;
var wsPT = wb.Worksheets.Add(name);
var pt = wsPT.PivotTables.AddNew(name, wsPT.Cell("A1"), source);
pt.RowLabels.Add("Category");
pt.Values.Add("Number")
.ShowAsPctFrom("Category").And("A")
.NumberFormat.Format = "0%";
}
wb.SaveAs(filePath);
}
这个漏洞位于XLWorkbook_Save.cs文件中的GeneratePivotTables
方法:
private static void GeneratePivotTables(WorkbookPart workbookPart, WorksheetPart worksheetPart,
XLWorksheet xlWorksheet,
SaveContext context)
{
foreach (var pt in xlWorksheet.PivotTables)
{
var ptCdp = context.RelIdGenerator.GetNext(RelType.Workbook);
var pivotTableCacheDefinitionPart = workbookPart.AddNewPart<PivotTableCacheDefinitionPart>(ptCdp);
GeneratePivotTableCacheDefinitionPartContent(pivotTableCacheDefinitionPart, pt);
var pivotCaches = new PivotCaches();
var pivotCache = new PivotCache {CacheId = 0U, Id = ptCdp};
pivotCaches.AppendChild(pivotCache);
workbookPart.Workbook.AppendChild(pivotCaches);
var pivotTablePart =
worksheetPart.AddNewPart<PivotTablePart>(context.RelIdGenerator.GetNext(RelType.Workbook));
GeneratePivotTablePartContent(pivotTablePart, pt);
pivotTablePart.AddPart(pivotTableCacheDefinitionPart, context.RelIdGenerator.GetNext(RelType.Workbook));
}
}
通过行 workbookPart.Workbook.AppendChild(pivotCaches);
,可以将多个 PivotCaches
添加到 workbookPart.Workbook
中,但它允许包含0个或1个。
话虽如此,唯一解决问题的方法是在源代码中修改上述方法,如下所示:
private static void GeneratePivotTables(WorkbookPart workbookPart, WorksheetPart worksheetPart,
XLWorksheet xlWorksheet,
SaveContext context)
{
var pivotCaches = workbookPart.Workbook.GetFirstChild<PivotCaches>();
foreach (var pt in xlWorksheet.PivotTables)
{
var ptCdp = context.RelIdGenerator.GetNext(RelType.Workbook);
var pivotTableCacheDefinitionPart = workbookPart.AddNewPart<PivotTableCacheDefinitionPart>(ptCdp);
GeneratePivotTableCacheDefinitionPartContent(pivotTableCacheDefinitionPart, pt);
if (pivotCaches == null)
workbookPart.Workbook.AppendChild(pivotCaches = new PivotCaches());
var pivotCache = new PivotCache { CacheId = (uint)pivotCaches.Count(), Id = ptCdp };
pivotCaches.AppendChild(pivotCache);
var pivotTablePart =
worksheetPart.AddNewPart<PivotTablePart>(context.RelIdGenerator.GetNext(RelType.Workbook));
GeneratePivotTablePartContent(pivotTablePart, pt);
pivotTablePart.PivotTableDefinition.CacheId = pivotCache.CacheId;
pivotTablePart.AddPart(pivotTableCacheDefinitionPart, context.RelIdGenerator.GetNext(RelType.Workbook));
}
}
更新:好消息是,我的帖子触发了ClosedXML源代码库的修复,由Francois Botha完成(同时要感谢petelids在那里提出了这个问题),所以你可以从那里获取代码,直到他们的下一个发布版本中包含它为止。