问题在Excel中使用OpenXml在C＃中创builddate单元格
我有一个要求将数据表导出为excel文件。我使用DocumentFormat.OpenXml完成了它。 但我不能在导出的Excel中获取date（年 – 月 – 日）filter，因为我的单元格被视为string，而不是Exceldate单元格。 我使用interop.dll得到它，但它是耗时的。 我有超过30000条logging。 任何帮助表示赞赏。 我的代码如下：
protected void Page_Load(object sender, EventArgs e) { DataSet ds=new DataSet(); ds.Tables.Add(GetData()); GenerateExcel(ds); } public void GenerateExcel(DataSet data) { var Memstream = new MemoryStream(); using (var workbook = SpreadsheetDocument.Create(Memstream, DocumentFormat.OpenXml.SpreadsheetDocumentType.Workbook)) { var workbookPart = workbook.AddWorkbookPart(); workbook.WorkbookPart.Workbook = new DocumentFormat.OpenXml.Spreadsheet.Workbook(); workbook.WorkbookPart.Workbook.Sheets = new DocumentFormat.OpenXml.Spreadsheet.Sheets(); WorkbookStylesPart wbsp = workbookPart.AddNewPart<WorkbookStylesPart>(); wbsp.Stylesheet = CreateStylesheet1(); wbsp.Stylesheet.Save(); uint sheetId = 0; foreach (System.Data.DataTable table in data.Tables) { var sheetPart = workbook.WorkbookPart.AddNewPart<WorksheetPart>(); var sheetData = new DocumentFormat.OpenXml.Spreadsheet.SheetData(); sheetPart.Worksheet = new DocumentFormat.OpenXml.Spreadsheet.Worksheet(sheetData); DocumentFormat.OpenXml.Spreadsheet.Sheets sheets = workbook.WorkbookPart.Workbook.GetFirstChild<DocumentFormat.OpenXml.Spreadsheet.Sheets>(); string relationshipId = workbook.WorkbookPart.GetIdOfPart(sheetPart); int k = sheets.ChildElements.Count; string bsd = sheets.InnerText; string jknkj = sheets.InnerXml; sheetId = sheetId++; DocumentFormat.OpenXml.Spreadsheet.Sheet sheet = new DocumentFormat.OpenXml.Spreadsheet.Sheet() { Id = relationshipId, SheetId = sheetId, Name = table.TableName }; sheets.Append(sheet); DocumentFormat.OpenXml.Spreadsheet.Row headerRow = new DocumentFormat.OpenXml.Spreadsheet.Row(); List<String> columns = new List<string>(); foreach (DataColumn column in table.Columns) { columns.Add(column.ColumnName); DocumentFormat.OpenXml.Spreadsheet.Cell cell = new DocumentFormat.OpenXml.Spreadsheet.Cell(); cell.DataType = DocumentFormat.OpenXml.Spreadsheet.CellValues.String; cell.CellValue = new DocumentFormat.OpenXml.Spreadsheet.CellValue(column.ColumnName); headerRow.AppendChild(cell); } sheetData.AppendChild(headerRow); foreach (DataRow dsrow in table.Rows) { DocumentFormat.OpenXml.Spreadsheet.Row newRow = new DocumentFormat.OpenXml.Spreadsheet.Row(); foreach (String col in columns) { DateTime dDate; if (DateTime.TryParse(dsrow[col].ToString(), out dDate)) { DocumentFormat.OpenXml.Spreadsheet.Cell cell = new DocumentFormat.OpenXml.Spreadsheet.Cell(); cell.DataType = DocumentFormat.OpenXml.Spreadsheet.CellValues.Number; cell.StyleIndex = 164; cell.CellValue = new DocumentFormat.OpenXml.Spreadsheet.CellValue(dDate.ToOADate().ToString()); newRow.AppendChild(cell); } else { DocumentFormat.OpenXml.Spreadsheet.Cell cell = new DocumentFormat.OpenXml.Spreadsheet.Cell(); cell.DataType = DocumentFormat.OpenXml.Spreadsheet.CellValues.String; cell.CellValue = new DocumentFormat.OpenXml.Spreadsheet.CellValue(dsrow[col].ToString()); newRow.AppendChild(cell); } } sheetData.AppendChild(newRow); } } workbookPart.Workbook.Save(); workbook.Close(); } string filename=@"D:\\Excel Samples\file_" + DateTime.Now.ToString("MM-dd-yyyyHH-mm-ss") + ".xlsx"; FileStream file = new FileStream(filename, FileMode.Create, FileAccess.Write); Memstream.WriteTo(file); file.Close(); Memstream.Close(); } private Stylesheet CreateStylesheet1() { Stylesheet ss = new Stylesheet(); Fonts fts = new Fonts(); DocumentFormat.OpenXml.Spreadsheet.Font ft = new DocumentFormat.OpenXml.Spreadsheet.Font(); FontName ftn = new FontName(); ftn.Val = "Calibri"; DocumentFormat.OpenXml.Spreadsheet.FontSize ftsz = new DocumentFormat.OpenXml.Spreadsheet.FontSize(); ftsz.Val = 11; ft.FontName = ftn; ft.FontSize = ftsz; fts.Append(ft); fts.Count = (uint)fts.ChildElements.Count; Fills fills = new Fills(); Fill fill; PatternFill patternFill; fill = new Fill(); patternFill = new PatternFill(); patternFill.PatternType = PatternValues.None; fill.PatternFill = patternFill; fills.Append(fill); fill = new Fill(); patternFill = new PatternFill(); patternFill.PatternType = PatternValues.Gray125; fill.PatternFill = patternFill; fills.Append(fill); fills.Count = (uint)fills.ChildElements.Count; Borders borders = new Borders(); Border border = new Border(); border.LeftBorder = new LeftBorder(); border.RightBorder = new RightBorder(); border.TopBorder = new TopBorder(); border.BottomBorder = new BottomBorder(); border.DiagonalBorder = new DiagonalBorder(); borders.Append(border); borders.Count = (uint)borders.ChildElements.Count; CellStyleFormats csfs = new CellStyleFormats(); CellFormat cf = new CellFormat(); cf.NumberFormatId = 0; cf.FontId = 0; cf.FillId = 0; cf.BorderId = 0; csfs.Append(cf); csfs.Count = (uint)csfs.ChildElements.Count; uint iExcelIndex = 164; NumberingFormats nfs = new NumberingFormats(); CellFormats cfs = new CellFormats(); cf = new CellFormat(); cf.NumberFormatId = 0; cf.FontId = 0; cf.FillId = 0; cf.BorderId = 0; cf.FormatId = 0; cfs.Append(cf); NumberingFormat nf; nf = new NumberingFormat(); nf.NumberFormatId = iExcelIndex++; nf.FormatCode = StringValue.FromString("mm/dd/yyyy hh:mm:ss"); //nf.FormatCode = StringValue.FromString("mm-d-yy h:mm:ss AM/PM"); nfs.Append(nf); cf = new CellFormat(); cf.ApplyNumberFormat = true; cf.NumberFormatId = nf.NumberFormatId; cf.FontId = 0; cf.FillId = 0; cf.BorderId = 0; cf.FormatId = 0; cfs.Append(cf); nf = new NumberingFormat(); nf.NumberFormatId = iExcelIndex++; nf.FormatCode = "#,##0.0000"; nfs.Append(nf); cf = new CellFormat(); cf.NumberFormatId = nf.NumberFormatId; cf.FontId = 0; cf.FillId = 0; cf.BorderId = 0; cf.FormatId = 0; cf.ApplyNumberFormat = true; cfs.Append(cf); // #,##0.00 is also Excel style index 4 nf = new NumberingFormat(); nf.NumberFormatId = iExcelIndex++; nf.FormatCode = "#,##0.00"; nfs.Append(nf); cf = new CellFormat(); cf.NumberFormatId = nf.NumberFormatId; cf.FontId = 0; cf.FillId = 0; cf.BorderId = 0; cf.FormatId = 0; cf.ApplyNumberFormat = true; cfs.Append(cf); // @ is also Excel style index 49 nf = new NumberingFormat(); nf.NumberFormatId = iExcelIndex++; nf.FormatCode = "@"; nfs.Append(nf); cf = new CellFormat(); cf.NumberFormatId = nf.NumberFormatId; cf.FontId = 0; cf.FillId = 0; cf.BorderId = 0; cf.FormatId = 0; cf.ApplyNumberFormat = true; cfs.Append(cf); nfs.Count = (uint)nfs.ChildElements.Count; cfs.Count = (uint)cfs.ChildElements.Count; ss.Append(nfs); ss.Append(fts); ss.Append(fills); ss.Append(borders); ss.Append(csfs); ss.Append(cfs); CellStyles css = new CellStyles(); CellStyle cs = new CellStyle(); cs.Name = "Normal"; cs.FormatId = 0; cs.BuiltinId = 0; css.Append(cs); css.Count = (uint)css.ChildElements.Count; ss.Append(css); DifferentialFormats dfs = new DifferentialFormats(); dfs.Count = 0; ss.Append(dfs); TableStyles tss = new TableStyles(); tss.Count = 0; tss.DefaultTableStyle = "TableStyleMedium9"; tss.DefaultPivotStyle = "PivotStyleLight16"; ss.Append(tss); return ss; } 感谢您的回复。 我得到了答案。 通过设置StyleIndex = 1而不是164，我得到了解决scheme。 希望这有助于任何人..