使用 OpenXML 在 Excel 单元格中添加日期

Question

这就是我正在做的事情：

CellFormat cellFormat = 
                new CellFormat() 
                { NumberFormatId = (UInt32Value)14U, 
                    FontId = (UInt32Value)0U, 
                    FillId = (UInt32Value)0U, 
                    BorderId = (UInt32Value)0U, 
                    FormatId = (UInt32Value)0U, 
                    ApplyNumberFormat = true };

sd.WorkbookPart.WorkbookStylesPart.Stylesheet.CellFormats.AppendChild<CellFormat>(cellFormat);

_dateStyleIndex = sd.WorkbookPart.WorkbookStylesPart.Stylesheet.CellFormats.Count() - 1;

然后在我的代码中的某个地方

else if (type == DataTypes.DateTime)
{                
    DateTime dateTime = DateTime.Parse(text);
    double oaValue = dateTime.ToOADate();
    cell.CellValue = new CellValue(oaValue.ToString(CultureInfo.InvariantCulture));
    cell.DataType = new EnumValue<CellValues>(CellValues.Date);
    cell.StyleIndex = Convert.ToUInt32(_dateStyleIndex);               
}

但是，当我使用 Open XML SDK Tool 验证生成的 excel 文件时，出现以下验证错误：属性 't' 具有无效值'd'。枚举约束失败。

我在这里错过了什么？预先感谢您的帮助。

PS：补充一下，这就是x:sheetData的样子。它给了我验证错误：

<x:sheetData xmlns:x="http://schemas.openxmlformats.org/spreadsheetml/2006/main">
  <x:row r="2">
    <x:c r="B2" t="s">
      <x:v>0</x:v>
    </x:c>
    <x:c r="C2" t="s">
      <x:v>1</x:v>
    </x:c>
    <x:c r="D2" t="s">
      <x:v>2</x:v>
    </x:c>
  </x:row>
  <x:row r="3">
    <x:c r="B3" t="s">
      <x:v>3</x:v>
    </x:c>
    <x:c r="C3" t="s">
      <x:v>6</x:v>
    </x:c>
    <x:c r="D3" s="1" t="d">
      <x:v>42634.906087963</x:v>
    </x:c>
  </x:row>
  <x:row r="4">
    <x:c r="B4" t="s">
      <x:v>4</x:v>
    </x:c>
    <x:c r="C4" t="s">
      <x:v>7</x:v>
    </x:c>
    <x:c r="D4" s="1" t="d">
      <x:v>42634.9062037037</x:v>
    </x:c>
  </x:row>
  <x:row r="5">
    <x:c r="B5" t="s">
      <x:v>5</x:v>
    </x:c>
    <x:c r="C5" t="s">
      <x:v>8</x:v>
    </x:c>
    <x:c r="D5" s="1" t="d">
      <x:v>42634.9062847222</x:v>
    </x:c>
  </x:row>
</x:sheetData>

Answer 1

为了获得最广泛的兼容性，请使用 CellValues.Number 作为单元格数据类型。

根据 docs，CellValues.Date 适用于 Excel 2010，因此您可能希望避免它以完全向后兼容 Excel 2007（以及可能的其他应用程序）。

//broadly supported - earliest Excel numeric date 01/01/1900
DateTime dateTime = DateTime.Parse(text);
double oaValue = dateTime.ToOADate();
cell.CellValue = new CellValue(oaValue.ToString(CultureInfo.InvariantCulture));
cell.DataType = new EnumValue<CellValues>(CellValues.Number);
cell.StyleIndex = Convert.ToUInt32(_numericDateCellFormatIndex); 


//supported in excel 2010 - not XLSX Transitional compliant 
DateTime dateTime = DateTime.Parse(text);
cell.CellValue = new CellValue(dateTime.ToString("s"));
cell.DataType = new EnumValue<CellValues>(CellValues.Date);
cell.StyleIndex = Convert.ToUInt32(_sortableDateCellFormatIndex);

这个 earlier more complete answer 表明 Excel 2010 默认不使用 'sortable' CellValues.Date 数据类型。

推测CellValues.Date类型的原因是为了克服数字日期的限制，例如最早的Excel数字日期是01/01/1900。

digitalpreservation.gov explains some of the historical intention behind the date cell type, and this page explains that XLSX Transitional is the version used by mainstream real world applications（2014 年测试）。

XLSX Strict has a value type for cells of date, using the Complete, Extended Format Calendar representations in ISO 8601. For reasons of backwards compatibility, this typed use of ISO 8601 dates is not permitted in XLSX Transitional.

Late in the ISO standardization process for OOXML, a proposal was made to adopt the ISO 8601 format for dates and times in spreadsheets.

The experts present at the ISO 29500 Ballot Resolution Meeting where votes were held on the outstanding proposals for the OOXML format were primarily experts in XML and in textual documents rather than with spreadsheets

Since the intent of the Transitional variant of ISO 29500 was to be compatible with the existing corpus of .xlsx documents and the applications designed to handle them, an amendment to Part 4 to disallow ISO 8601 dates in the Transitional variant was introduced. Secondly, ISO 8601 is a very flexible format, and any use in a context that aims at interoperability needs to be specific about which particular textual string patterns are expected for dates and times.

... Tests in November 2014 indicated that Google Sheets and Libre Office both created new documents in the Transitional variant

使用 OpenXML 在 Excel 单元格中添加日期

Adding a date in an Excel cell using OpenXML

c#

excel

openxml

openxml-sdk