如何在Open XML工作表中插入日期？

Question

我正在使用Microsoft Open XML SDK 2,我很难在单元格中插入日期.我可以通过设置插入数字而没有问题Cell.DataType = CellValues.Number,但是当我对日期(Cell.DataType = CellValues.Date)执行相同操作时Excel 2010崩溃(2007年也是如此).

我尝试将Cell.Text值设置为多种日期格式以及Excel的日期/数字格式无济于事.我也尝试使用样式,删除type属性,以及我扔在墙上的许多其他比萨...

有人能指出我在工作表中插入日期的例子吗？

Answer 1

我使用了Andrew J提供的代码,但是DataType CellValues.Date为我生成了一个损坏的xlsx文件.

该DataType CellValues.Number工作对我罚款(不要忘记设置NumberFormatId):

cell.DataType = new EnumValue<CellValues>(CellValues.Number);

我的整个代码:

DateTime valueDate = DateTime.Now;
string valueString = valueDate.ToOADate().ToString();
CellValue cellValue = new CellValue(valueString);

Cell cell = new Cell();
cell.DataType = new EnumValue<CellValues>(CellValues.Number);
cell.StyleIndex = yourStyle; //StyleIndex of CellFormat cfBaseDate -> See below
cell.Append(cellValue);

我CellFormat在样式表的单元格的样子:

CellFormat cfBaseDate = new CellFormat() { 
 ApplyNumberFormat = true,
 NumberFormatId = 14, //14 is a localized short Date (d/m/yyyy) -> See list below
 //Some further styling parameters
}; 

如果您想格式化你的日期另一种方式,这里是所有默认的Excel列表NumberFormatId的

ID  FORMAT CODE
0   General
1   0
2   0.00
3   #,##0
4   #,##0.00
9   0%
10  0.00%
11  0.00E+00
12  # ?/?
13  # ??/??
14  d/m/yyyy
15  d-mmm-yy
16  d-mmm
17  mmm-yy
18  h:mm tt
19  h:mm:ss tt
20  H:mm
21  H:mm:ss
22  m/d/yyyy H:mm
37  #,##0 ;(#,##0)
38  #,##0 ;[Red](#,##0)
39  #,##0.00;(#,##0.00)
40  #,##0.00;[Red](#,##0.00)
45  mm:ss
46  [h]:mm:ss
47  mmss.0
48  ##0.0E+0
49  @

清单来源:http://closedxml.codeplex.com/wikipage？title = NumberFormatId%20Lookup%20Table

我知道这个列表来自ClosedXML,但它在OpenXML中是相同的.

Answer 2

你必须转换DateTime为double使用函数,ToOADate即:

DateTime dtValue = DateTime.Now;
string strValue = dtValue.ToOADate().ToString(CultureInfo.InvariantCulture);

然后将其设置为 CellValue

Cell cell;
cell.DataType = new EnumValue<CellValues>(CellValues.Date);
cell.CellValue = new CellValue(strValue);

请记住使用DateTime格式设置格式化单元格,否则您将看到double值,而不是日期.

Answer 3

SpreadsheetDocument从头开始创建新文件时Date,要使格式化工作,Stylesheet必须创建最小化.

关键是那几行:

new CellFormat
{
    NumberFormatId = 14,
    ApplyNumberFormat = true
})

全Stylesheet等级:

using (var spreadSheet = SpreadsheetDocument.Create(ms, SpreadsheetDocumentType.Workbook))
{
    // Workbook
    var workbookPart = spreadSheet.AddWorkbookPart();
    workbookPart.Workbook =
        new Workbook(new Sheets(new Sheet { Name = "Sheet1", SheetId = (UInt32Value) 1U, Id = "rId1" }));

    // Add minimal Stylesheet
    var stylesPart = spreadSheet.WorkbookPart.AddNewPart<WorkbookStylesPart>();
    stylesPart.Stylesheet = new Stylesheet
    {
        Fonts = new Fonts(new Font()),
        Fills = new Fills(new Fill()),
        Borders = new Borders(new Border()),
        CellStyleFormats = new CellStyleFormats(new CellFormat()),
        CellFormats =
            new CellFormats(
                new CellFormat(),
                new CellFormat
                {
                    NumberFormatId = 14,
                    ApplyNumberFormat = true
                })
    };

    // Continue creating `WorksheetPart`...

之后Stylesheet加入,DateTime可以格式化:

if (valueType == typeof(DateTime))
{
    DateTime date = (DateTime)value;
    cell.CellValue = new CellValue(date.ToOADate().ToString(CultureInfo.InvariantCulture));

    // "StyleIndex" is "1", because "NumberFormatId=14"
    // is in the 2nd item of `CellFormats` array.
    cell.StyleIndex = 1; 
}

请注意,StyleIndex值取决于数组或对象中CellFormat项的顺序.在数组中第二项上的此示例项中.CellFormatsStylesheetNumberFormatId = 14

Answer 4

在 OpenXml 中存储日期有 2 种方法；通过写入数字（使用ToOADate）并将 设为DataType或Number写入ISO 8601格式的日期并将DataType设为Date。请注意，默认情况DataType下Number，如果您选择第一个选项，则不必设置DataType.

无论选择哪种方法，都需要设置样式，因为 Excel 会以相同的方式显示这两种方法。以下代码显示了使用 格式Number（无论是否显式设置DataType）并使用 ISO 8601 格式写入日期的示例。

using (SpreadsheetDocument document = SpreadsheetDocument.Create(filename, SpreadsheetDocumentType.Workbook))
{
    //fluff to generate the workbook etc
    WorkbookPart workbookPart = document.AddWorkbookPart();
    workbookPart.Workbook = new Workbook();

    var worksheetPart = workbookPart.AddNewPart<WorksheetPart>();
    worksheetPart.Worksheet = new Worksheet();

    Sheets sheets = workbookPart.Workbook.AppendChild(new Sheets());

    Sheet sheet = new Sheet() { Id = workbookPart.GetIdOfPart(worksheetPart), SheetId = 1, Name = "Sheet" };
    sheets.Append(sheet);

    workbookPart.Workbook.Save();

    var sheetData = worksheetPart.Worksheet.AppendChild(new SheetData());

    //add the style
    Stylesheet styleSheet = new Stylesheet();

    CellFormat cf = new CellFormat();
    cf.NumberFormatId = 14;
    cf.ApplyNumberFormat = true;

    CellFormats cfs = new CellFormats();
    cfs.Append(cf);
    styleSheet.CellFormats = cfs;

    styleSheet.Borders = new Borders();
    styleSheet.Borders.Append(new Border());
    styleSheet.Fills = new Fills();
    styleSheet.Fills.Append(new Fill());
    styleSheet.Fonts = new Fonts();
    styleSheet.Fonts.Append(new Font());

    workbookPart.AddNewPart<WorkbookStylesPart>();
    workbookPart.WorkbookStylesPart.Stylesheet = styleSheet;

    CellStyles css = new CellStyles();
    CellStyle cs = new CellStyle();
    cs.FormatId = 0;
    cs.BuiltinId = 0;
    css.Append(cs);
    css.Count = UInt32Value.FromUInt32((uint)css.ChildElements.Count);
    styleSheet.Append(css);

    Row row = new Row();

    DateTime date = new DateTime(2017, 6, 24);

    /*** Date code here ***/
    //write an OADate with type of Number
    Cell cell1 = new Cell();
    cell1.CellReference = "A1";
    cell1.CellValue = new CellValue(date.ToOADate().ToString());
    cell1.DataType = new EnumValue<CellValues>(CellValues.Number);
    cell1.StyleIndex = 0;
    row.Append(cell1);

    //write an OADate with no type (defaults to Number)
    Cell cell2 = new Cell();
    cell2.CellReference = "B1";
    cell2.CellValue = new CellValue(date.ToOADate().ToString());
    cell1.StyleIndex = 0;
    row.Append(cell2);

    //write an ISO 8601 date with type of Date
    Cell cell3 = new Cell();
    cell3.CellReference = "C1";
    cell3.CellValue = new CellValue(date.ToString("yyyy-MM-dd"));
    cell3.DataType = new EnumValue<CellValues>(CellValues.Date);
    cell1.StyleIndex = 0;
    row.Append(cell3);

    sheetData.AppendChild(row);

    worksheetPart.Worksheet.Save();
}