DataSet使用OpenXML的Excel

我有一个数据集上有几个表。 我想将它导出到Excel，其中每个表将在不同的工作表上。 我怎样才能使用OpenXML，但我想坚持列的数据types（例如：string，date，数字等）？ 目前我有：

using (SpreadsheetDocument workbook = SpreadsheetDocument.Create(fileName, SpreadsheetDocumentType.Workbook)){ workbook.AddWorkbookPart(); workbook.WorkbookPart.Workbook = new Workbook {Sheets = new Sheets()}; uint sheetId = 1; var sheetPart = workbook.WorkbookPart.AddNewPart<WorksheetPart>(); var sheetData = new SheetData(); sheetPart.Worksheet = new Worksheet(sheetData); var sheets = workbook.WorkbookPart.Workbook.GetFirstChild<Sheets>(); string relationshipId = workbook.WorkbookPart.GetIdOfPart(sheetPart); if (sheets.Elements<Sheet>().Any()) { sheetId = sheets.Elements<Sheet>().Select(s => s.SheetId.Value).Max() + 1; } var sheet = new Sheet { Id = relationshipId, SheetId = sheetId, Name = exportedSheet }; sheets.Append(new List<OpenXmlElement> {sheet}); var headerRow = new Row(); var columns = new List<string>(); foreach (DataColumn column in extractedData.Columns) { columns.Add(column.ColumnName); var cell = new Cell { DataType = CellValues.String, CellValue = new CellValue(column.ColumnName) }; headerRow.AppendChild(cell); } sheetData.AppendChild(headerRow); foreach (DataRow dsrow in extractedData.Rows) { var newRow = new Row(); DataRow dsrow1 = dsrow; foreach (Cell cell in columns.Select(col => new Cell { DataType = CellValues.String, CellValue = new CellValue(dsrow1[col].ToString()) })) { newRow.AppendChild(cell); } sheetData.AppendChild(newRow); }} 

Answer 1

您只需将每列的值映射到相应的CellValues值即可。 这是粗略的想法。

 // store this somewhere (a static field?) var columnTypeToCellDataTypeMap = new Dictionary<Type, CellValues> { { typeof(Boolean), CellValues.Boolean }, { typeof(Byte), CellValues.Number }, { typeof(Decimal), CellValues.Number }, { typeof(Char), CellValues.String }, { typeof(DateTime), CellValues.Date }, { typeof(Double), CellValues.Number }, { typeof(Decimal), CellValues.Number }, { typeof(Int16), CellValues.Number }, { typeof(Int32), CellValues.Number }, { typeof(Int64), CellValues.Number }, { typeof(SByte), CellValues.Number }, { typeof(Single), CellValues.Number }, { typeof(String), CellValues.String }, { typeof(UInt16), CellValues.Number }, { typeof(UInt32), CellValues.Number }, { typeof(UInt64), CellValues.Number }, } // and use it like this: foreach (DataRow row in table.Rows) { foreach (DataColumn column in table.Columns) { // map the column type to an OpenXML SDK CellValues type CellValues cellDataType; if (!columnTypeToCellDataTypeMap.TryGetValue(column.DataType, out cellDataType)) cellDataType = CellValues.String; // get the cell value object value = row[column]; string cellValue = (value != null ? value.ToString() : ""); // construct the cell var cell = new Cell { DataType = cellDataType, CellValue = value }; // etc ... } }