使用openxml将背景颜色应用于Excel中的特定单元格
以下是我的代码，在下面的最后一个方法中，我做了所有的操作。 请忽略方法的返回types，我稍后改变它。
public static byte[] CreateExcelDocument<T>(List<T> list, string filename) { DataSet ds = new DataSet(); ds.Tables.Add(ListToDataTable(list)); byte[] byteArray = CreateExcelDocumentAsStream(ds, filename); return byteArray; } public static bool CreateExcelDocumentAsStream(DataSet ds, string filename, System.Web.HttpResponse Response) { try { System.IO.MemoryStream stream = new System.IO.MemoryStream(); using (SpreadsheetDocument document = SpreadsheetDocument.Create(stream, SpreadsheetDocumentType.Workbook, true)) { WriteExcelFile(ds, document); } stream.Flush(); stream.Position = 0; Response.ClearContent(); Response.Clear(); Response.Buffer = true; Response.Charset = ""; // NOTE: If you get an "HttpCacheability does not exist" error on the following line, make sure you have // manually added System.Web to this project's References. Response.Cache.SetCacheability(System.Web.HttpCacheability.NoCache); Response.AddHeader("content-disposition", "attachment; filename=" + filename); Response.ContentType = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet"; byte[] data1 = new byte[stream.Length]; stream.Read(data1, 0, data1.Length); stream.Close(); Response.BinaryWrite(data1); Response.Flush(); Response.End(); return true; } catch (Exception ex) { Trace.WriteLine("Failed, exception thrown: " + ex.Message); return false; } } private static void WriteExcelFile(DataSet ds, SpreadsheetDocument spreadsheet) { // Create the Excel file contents. This function is used when creating an Excel file either writing // to a file, or writing to a MemoryStream. spreadsheet.AddWorkbookPart(); spreadsheet.WorkbookPart.Workbook = new DocumentFormat.OpenXml.Spreadsheet.Workbook(); // My thanks to James Miera for the following line of code (which prevents crashes in Excel 2010) spreadsheet.WorkbookPart.Workbook.Append(new BookViews(new WorkbookView())); // If we don't add a "WorkbookStylesPart", OLEDB will refuse to connect to this .xlsx file ! WorkbookStylesPart workbookStylesPart = spreadsheet.WorkbookPart.AddNewPart<WorkbookStylesPart>("rIdStyles"); //var workbookStylesPart = spreadsheet.WorkbookPart.AddNewPart<WorkbookStylesPart>(); Stylesheet stylesheet = new Stylesheet(new Fills( // Index 0 - required, reserved by Excel - no pattern new Fill(new PatternFill { PatternType = PatternValues.None }), // Index 1 - required, reserved by Excel - fill of gray 125 new Fill(new PatternFill { PatternType = PatternValues.Gray125 }), // Index 2 - no pattern text on gray background new Fill(new PatternFill { PatternType = PatternValues.Solid, BackgroundColor = new BackgroundColor { Indexed = 64U }, ForegroundColor = new ForegroundColor { Rgb = "FFD9D9D9" } }) )); workbookStylesPart.Stylesheet = stylesheet; workbookStylesPart.Stylesheet.Save(); // create a solid red fill // Loop through each of the DataTables in our DataSet, and create a new Excel Worksheet for each. uint worksheetNumber = 1; Sheets sheets = spreadsheet.WorkbookPart.Workbook.AppendChild<Sheets>(new Sheets()); foreach (DataTable dt in ds.Tables) { // For each worksheet you want to create string worksheetName = dt.TableName; // Create worksheet part, and add it to the sheets collection in workbook WorksheetPart newWorksheetPart = spreadsheet.WorkbookPart.AddNewPart<WorksheetPart>(); Sheet sheet = new Sheet() { Id = spreadsheet.WorkbookPart.GetIdOfPart(newWorksheetPart), SheetId = worksheetNumber, Name = worksheetName }; sheets.Append(sheet); // Append this worksheet's data to our Workbook, using OpenXmlWriter, to prevent memory problems WriteDataTableToExcelWorksheet(dt, newWorksheetPart); worksheetNumber++; } spreadsheet.WorkbookPart.Workbook.Save(); spreadsheet.Close(); } private static void WriteDataTableToExcelWorksheet(DataTable dt, WorksheetPart worksheetPart) { OpenXmlWriter writer = OpenXmlWriter.Create(worksheetPart); writer.WriteStartElement(new Worksheet()); writer.WriteStartElement(new SheetData()); string cellValue = ""; // Create a Header Row in our Excel file, containing one header for each Column of data in our DataTable. // // We'll also create an array, showing which type each column of data is (Text or Numeric), so when we come to write the actual // cells of data, we'll know if to write Text values or Numeric cell values. int numberOfColumns = dt.Columns.Count; bool[] IsNumericColumn = new bool[numberOfColumns]; string[] excelColumnNames = new string[numberOfColumns]; for (int n = 0; n < numberOfColumns; n++) excelColumnNames[n] = GetExcelColumnName(n); // // Create the Header row in our Excel Worksheet // uint rowIndex = 1; writer.WriteStartElement(new Row { RowIndex = rowIndex }); for (int colInx = 0; colInx < numberOfColumns; colInx++) { DataColumn col = dt.Columns[colInx]; //AppendTextCell(excelColumnNames[colInx] + "1", col.ColumnName, ref writer); AppendTextCell1(excelColumnNames[colInx] + "1", col.ColumnName, ref writer); IsNumericColumn[colInx] = (col.DataType.FullName == "System.Decimal") || (col.DataType.FullName == "System.Int32") || (col.DataType.FullName == "System.Double") || (col.DataType.FullName == "System.Single"); } writer.WriteEndElement(); // End of header "Row" // // Now, step through each row of data in our DataTable... // double cellNumericValue = 0; foreach (DataRow dr in dt.Rows) { // ...create a new row, and append a set of this row's data to it. ++rowIndex; writer.WriteStartElement(new Row { RowIndex = rowIndex }); for (int colInx = 0; colInx < numberOfColumns; colInx++) { cellValue = dr.ItemArray[colInx].ToString(); // Create cell with data if (IsNumericColumn[colInx]) { // For numeric cells, make sure our input data IS a number, then write it out to the Excel file. // If this numeric value is NULL, then don't write anything to the Excel file. cellNumericValue = 0; if (double.TryParse(cellValue, out cellNumericValue)) { cellValue = cellNumericValue.ToString(); AppendNumericCell(excelColumnNames[colInx] + rowIndex.ToString(), cellValue, ref writer); } } else { // For text cells, just write the input data straight out to the Excel file. AppendTextCell(excelColumnNames[colInx] + rowIndex.ToString(), cellValue, ref writer); } } writer.WriteEndElement(); // End of Row } writer.WriteEndElement(); // End of SheetData writer.WriteEndElement(); // End of worksheet writer.Close(); } private static void AppendTextCell(string cellReference, string cellStringValue, ref OpenXmlWriter writer) { // Add a new Excel Cell to our Row //writer.WriteElement(new Cell { CellValue = new CellValue(cellStringValue), CellReference = cellReference, DataType = CellValues.String }); writer.WriteElement(new Cell { CellValue = new CellValue(cellStringValue), CellReference = cellReference, DataType = CellValues.String }); } private static void AppendTextCell1(string cellReference, string cellStringValue, ref OpenXmlWriter writer) { // Add a new Excel Cell to our Row //writer.WriteElement(new Cell { CellValue = new CellValue(cellStringValue), CellReference = cellReference, DataType = CellValues.String }); writer.WriteElement(new Cell(new CellValue(cellStringValue)) { CellReference = cellReference, DataType = CellValues.String, StyleIndex = 2 }); } private static void AppendNumericCell(string cellReference, string cellStringValue, ref OpenXmlWriter writer) { // Add a new Excel Cell to our Row writer.WriteElement(new Cell { CellValue = new CellValue(cellStringValue), CellReference = cellReference, DataType = CellValues.Number }); } 以上是我的代码。 我尝试通过填充样式表来添加颜色，但是我不明白styleindex应用于单元格的概念 。 请帮忙。
此样式化Excel的MSDN博客有您需要的信息。
使用Open XML 2.0文章的风格化Excel工作表通过更改格式对背景颜色起作用。