如何使用OpenXmlWriterconfigurationxlsx格式和公式
我需要创build大的通用xlsx报告（超过500k行~50列）。 我写了生成这个报告的方法，但是我不知道如何设置单元格的格式（数据格式/样式（边框等））以及如何把公式放到使用OpenXmlWriter的单元格中。
private void FillExcelWorksheet<T>(String fileName, IEnumerable<T> source) { var properties = typeof(T).GetProperties(); using (SpreadsheetDocument document = SpreadsheetDocument.Create(fileName, SpreadsheetDocumentType.Workbook)) { //this list of attributes will be used when writing a start element List<OpenXmlAttribute> stringAttributes = new List<OpenXmlAttribute>() { new OpenXmlAttribute("t", null, "str") }; OpenXmlWriter writer; var workBookPart = document.AddWorkbookPart(); var workSheetPart = workBookPart.AddNewPart<WorksheetPart>(); writer = OpenXmlWriter.Create(workSheetPart); writer.WriteStartElement(new Worksheet()); writer.WriteStartElement(new SheetData()); writer.WriteStartElement(new Row()); foreach (PropertyInfo property in properties) { var pAttributes = property.GetCustomAttributes<ReportColumnAttribute>(); if (pAttributes.Any()) { var attribute = pAttributes.First(); writer.WriteStartElement(new Cell(), stringAttributes); //write the cell value writer.WriteElement(new CellValue(attribute.ColumnName)); // write the end cell element writer.WriteEndElement(); } } // write the end row element writer.WriteEndElement(); foreach (var item in source) { //write the row start element with the row index attribute writer.WriteStartElement(new Row()); foreach (PropertyInfo property in properties) { var pAttributes = property.GetCustomAttributes<ReportColumnAttribute>(); if (pAttributes.Any()) { //write the cell start element with the type and reference attributes writer.WriteStartElement(new Cell(), stringAttributes); //write the cell value writer.WriteElement(new CellValue(property.GetValue(item) != null ? property.GetValue(item).ToString() : String.Empty)); var attribute = pAttributes.First(); var format = attribute.Format; //todo apply data format // write the end cell element writer.WriteEndElement(); } } // write the end row element writer.WriteEndElement(); } // write the end SheetData element writer.WriteEndElement(); // write the end Worksheet element writer.WriteEndElement(); writer.Close(); writer = OpenXmlWriter.Create(document.WorkbookPart); writer.WriteStartElement(new Workbook()); writer.WriteStartElement(new Sheets()); writer.WriteElement(new Sheet() { Name = fileName, SheetId = 1, Id = document.WorkbookPart.GetIdOfPart(workSheetPart) }); // End Sheets writer.WriteEndElement(); // End Workbook writer.WriteEndElement(); writer.Close(); document.Close(); } } result with styles private DownloadResult FillExcelWorksheet<T>(String name, IEnumerable<T> source, Action<OpenXmlWriter, WorkbookStylesPart, SharedStringTablePart, Int32> addNonGenericReportInfo = null) { var properties = typeof(T).GetProperties(); var folder = ConfigurationManager.AppSettings["ReportsPath"]; if (!Directory.Exists(folder)) { Directory.CreateDirectory(folder); } //remove old files Directory.GetFiles(folder) .Select(f => new FileInfo(f)) .Where(f => f.CreationTime < DateTime.Now.AddDays(-1)) .ToList() .ForEach(f => f.Delete()); var fileName = String.Format("{0}_{1}.xlsx", name, Guid.NewGuid()); using (var document = SpreadsheetDocument.Create(folder + fileName, SpreadsheetDocumentType.Workbook)) { //this list of attributes will be used when writing a start element List<OpenXmlAttribute> stringAttributes = new List<OpenXmlAttribute>() { new OpenXmlAttribute("t", null, "str") }; OpenXmlWriter writer; var workBookPart = document.AddWorkbookPart(); var workSheetPart = workBookPart.AddNewPart<WorksheetPart>(); var sharedStringPart = workBookPart.AddNewPart<SharedStringTablePart>(); sharedStringPart.SharedStringTable = new SharedStringTable(); var stylesPart = document.WorkbookPart.AddNewPart<WorkbookStylesPart>(); stylesPart.Stylesheet = new Stylesheet(); stylesPart.Stylesheet.NumberingFormats = new NumberingFormats(); // create fills stylesPart.Stylesheet.Fills = new Fills(); stylesPart.Stylesheet.Fills.AppendChild(new Fill { PatternFill = new PatternFill { PatternType = PatternValues.None } }); // required, reserved by Excel //EXAMPLE DON'T REMOVE //stylesPart.Stylesheet.Fills.AppendChild(new Fill { PatternFill = new PatternFill { PatternType = PatternValues.Gray125 } }); // required, reserved by Excel //// create a solid red fill //var solidRed = new PatternFill() { PatternType = PatternValues.Solid }; //solidRed.ForegroundColor = new ForegroundColor { Rgb = HexBinaryValue.FromString("FFFF0000") }; // red fill //solidRed.BackgroundColor = new BackgroundColor { Indexed = 64 }; //stylesPart.Stylesheet.Fills.AppendChild(new Fill { PatternFill = solidRed }); stylesPart.Stylesheet.Fills.Count = 3; // blank cell format list stylesPart.Stylesheet.CellStyleFormats = new CellStyleFormats(); stylesPart.Stylesheet.CellStyleFormats.AppendChild(new CellFormat()); stylesPart.Stylesheet.CellStyleFormats.Count = 1; //Borders stylesPart.Stylesheet.Borders = new Borders(); stylesPart.Stylesheet.Borders.AppendChild(new Border()); var border = new Border(); border.Append(new BottomBorder() { Style = BorderStyleValues.Thin }); stylesPart.Stylesheet.Borders.AppendChild(border); stylesPart.Stylesheet.Borders.Count = 2; //Fonts stylesPart.Stylesheet.Fonts = new Fonts(); stylesPart.Stylesheet.Fonts.AppendChild(new Font()); var font = new Font(); font.Bold = new Bold(); stylesPart.Stylesheet.Fonts.AppendChild(font); stylesPart.Stylesheet.Fonts.Count = 2; // cell format list stylesPart.Stylesheet.CellFormats = new CellFormats(); // empty one for index 0, seems to be required stylesPart.Stylesheet.CellFormats.AppendChild(new CellFormat()); // cell format references style format 0, font 0, border 0, fill 2 and applies the fill stylesPart.Stylesheet.CellFormats.AppendChild(new CellFormat { FormatId = 0, FontId = 1, BorderId = 1, FillId = 0, ApplyFill = true }).AppendChild(new Alignment { Horizontal = HorizontalAlignmentValues.Center }); stylesPart.Stylesheet.CellFormats.Count = 2; writer = OpenXmlWriter.Create(workSheetPart); writer.WriteStartElement(new Worksheet()); writer.WriteStartElement(new SheetData()); writer.WriteStartElement(new Row()); foreach (PropertyInfo property in properties) { var pAttributes = property.GetCustomAttributes<ReportColumnAttribute>(); if (pAttributes.Any()) { var attribute = pAttributes.First(); var cell = new Cell(); cell.DataType = CellValues.SharedString; cell.StyleIndex = 1; writer.WriteStartElement(cell); //write the cell value var index = InsertSharedStringItem(attribute.ColumnName, sharedStringPart); writer.WriteElement(new CellValue(index.ToString())); // write the end cell element writer.WriteEndElement(); if (!String.IsNullOrEmpty(attribute.Format) && !_styleFormats.ContainsKey(attribute.Format)) { //164 is first free format id var formatId = 164 + (uint)_styleFormats.Count; var format = new NumberingFormat { NumberFormatId = formatId, FormatCode = attribute.Format }; stylesPart.Stylesheet.NumberingFormats.AppendChild(format); stylesPart.Stylesheet.CellFormats.AppendChild(new CellFormat { NumberFormatId = formatId, FontId = 0, BorderId = 0, FillId = 0, ApplyFill = true }); //stylesPart.Stylesheet.CellFormats.AppendChild(format); stylesPart.Stylesheet.CellStyleFormats.Count++; _styleFormats.Add(attribute.Format, new StyleIndexes(stylesPart.Stylesheet.CellFormats.Count, formatId)); stylesPart.Stylesheet.CellFormats.Count++; } } } // write the end row element writer.WriteEndElement(); foreach (var item in source) { //write the row start element with the row index attribute writer.WriteStartElement(new Row()); foreach (PropertyInfo property in properties) { var pAttributes = property.GetCustomAttributes<ReportColumnAttribute>(); if (pAttributes.Any()) { var attribute = pAttributes.First(); var cell = new Cell(); if (!String.IsNullOrEmpty(attribute.Format)) { cell.StyleIndex = (uint)_styleFormats[attribute.Format].StyleIndex; } var typeCode = Type.GetTypeCode(property.PropertyType); //write the cell start element with the type and reference attributes if (typeCode == TypeCode.String) { writer.WriteStartElement(cell, stringAttributes); } else { cell.DataType = CellValues.Number; writer.WriteStartElement(cell); } var value = String.Empty; if (typeCode == TypeCode.DateTime) { value = property.GetValue(item) != null ? Convert.ToDateTime(property.GetValue(item)).ToOADate().ToString() : String.Empty; } else { value = property.GetValue(item) != null ? property.GetValue(item).ToString() : String.Empty; } //write the cell value writer.WriteElement(new CellValue(value)); // write the end cell element writer.WriteEndElement(); } } // write the end row element writer.WriteEndElement(); } if (addNonGenericReportInfo != null) { addNonGenericReportInfo(writer, stylesPart, sharedStringPart, source.Count()); } sharedStringPart.SharedStringTable.Save(); stylesPart.Stylesheet.Save(); // write the end SheetData element writer.WriteEndElement(); // write the end Worksheet element writer.WriteEndElement(); writer.Close(); writer = OpenXmlWriter.Create(document.WorkbookPart); writer.WriteStartElement(new Workbook()); writer.WriteStartElement(new Sheets()); writer.WriteElement(new Sheet() { Name = name, SheetId = 1, Id = document.WorkbookPart.GetIdOfPart(workSheetPart) }); // End Sheets writer.WriteEndElement(); // End Workbook writer.WriteEndElement(); writer.Close(); document.Close(); } return new DownloadResult { Name = name + ".xlsx", PathToDownload = folder + fileName, }; } private static int InsertSharedStringItem(string text, SharedStringTablePart shareStringPart) { // If the part does not contain a SharedStringTable, create one. if (shareStringPart.SharedStringTable == null) { shareStringPart.SharedStringTable = new SharedStringTable(); } int i = 0; // Iterate through all the items in the SharedStringTable. If the text already exists, return its index. foreach (SharedStringItem item in shareStringPart.SharedStringTable.Elements<SharedStringItem>()) { if (item.InnerText == text) { return i; } i++; } // The text does not exist in the part. Create the SharedStringItem and return its index. shareStringPart.SharedStringTable.AppendChild(new SharedStringItem(new DocumentFormat.OpenXml.Spreadsheet.Text(text))); shareStringPart.SharedStringTable.Save(); return i; } private Dictionary<String, StyleIndexes> _styleFormats; private class StyleIndexes { public StyleIndexes(uint styleIndex, uint numberIndex) { StyleIndex = styleIndex; NumberIndex = numberIndex; } public uint StyleIndex { get; set; } public uint NumberIndex { get; set; } }