c# - 如何定义数据类型？

Question

我必须创建一个大的 XLSX 文件。我使用 OpenXmlWriter 尽可能快地完成任务。文件已正确创建，但我无法更改字段的数据类型。它始终是标准类型，我想对其中一些使用数字格式。

我尝试了很多方法，但没有一个奏效(Cell DataType，带有属性，......)。

这是一个例子:

SpreadsheetDocument fichier_excel = SpreadsheetDocument.Create(chemin + NomFichier, SpreadsheetDocumentType.Workbook);

fichier_excel.AddWorkbookPart();
WorksheetPart wsp = fichier_excel.WorkbookPart.AddNewPart<WorksheetPart>();

OpenXmlWriter writer = OpenXmlWriter.Create(wsp);
writer.WriteStartElement(new Worksheet());
writer.WriteStartElement(new SheetData());

oxa = new List<OpenXmlAttribute>();
oxa.Add(new OpenXmlAttribute("r", null, "1"));
writer.WriteStartElement(new Row(), oxa);

oxa = new List<OpenXmlAttribute>();
oxa.Add(new OpenXmlAttribute("t", null, "str"));
writer.WriteStartElement(new Cell(), oxa);
writer.WriteElement(new CellValue("10001"));
writer.WriteEndElement();

writer.WriteEndElement();

writer.WriteEndElement();

writer.Close();

writer = OpenXmlWriter.Create(fichier_excel.WorkbookPart);
writer.WriteStartElement(new Workbook());
writer.WriteStartElement(new Sheets());

writer.WriteElement(new Sheet()
{
    Name = "Inventaire",
    SheetId = 1,
    Id = fichier_excel.WorkbookPart.GetIdOfPart(wsp)
});

writer.WriteEndElement();

writer.WriteEndElement();
writer.Close();
writer.Dispose();

fichier_excel.Close();
fichier_excel.Dispose();

Answer 1

要使用数字类型，请设置 Cell 对象的 DataType 属性。

 Cell cell = new Cell();
 cell.DataType = CellValues.Number; 
 cell.CellValue = new CellValue("100");

您还需要在下一行发表评论:

 oxa.Add(new OpenXmlAttribute("t", null, "str"));

我也有newCell.StyleIndex = numberIndexStyle;

为了正确显示和格式化数字，您需要描述 cellformat 和 numberformat:

  uint iExcelIndex = 164;
  NumberingFormat nformatForcedText = new NumberingFormat
  {
       NumberFormatId = UInt32Value.FromUInt32(iExcelIndex++),
       FormatCode = StringValue.FromString("0.00E+00 ")
  };
  CellFormat cellFormat1 = new CellFormat()
  {
       NumberFormatId = 165U,
       ApplyNumberFormat = true
  };
  NumberingFormats numberingFormats = new NumberingFormats();
  numberingFormats.Append(nformatForcedText);
  numberingFormats.Count = UInt32Value.FromUInt32( (uint)numberingFormats.ChildElements.Count);
 CellFormats cellFormats1 = new CellFormats() {};     
 cellFormats1.Append(cellFormat1 );
 cellFormats1.Count = UInt32Value.ToUInt32((uint) cellFormats1.ChildElements.Count);
 Stylesheet StyleSheet = new Stylesheet();
 StyleSheet.Append(cellFormats1);
 StyleSheet.Append(numberingFormats);

WorkbookStylesPart stylesPart = workbookPart.AddNewPart<WorkbookStylesPart>();
stylesPart.Stylesheet = StyleSheet;
stylesPart.Stylesheet.Save();