此代码假定您已经安装了OpenXML SDK，并且您有一个.xlsx文件的路径。\n\n请注意，续写的代码将获取指定工作表中的所有数据，包括空单元格，并将它们存储在一个二维数组中。如果工作表中有多个行和列，数组的大小将与工作表中的行数和列数相匹配。\n\n```csharp\nusing DocumentFormat.OpenXml.Packaging;\nusing DocumentFormat.OpenXml.Spreadsheet;\nusing System;\nusing System.Collections.Generic;\nusing System.Linq;\n\npublic class ExcelReader\n{\n public static string[,] GetAllSheetData(string filePath, string sheetName)\n {\n // 打开Excel文件\n using (SpreadsheetDocument document = SpreadsheetDocument.Open(filePath, false))\n {\n // 获取工作表\n WorkbookPart workbookPart = document.WorkbookPart;\n Sheet sheet = workbookPart.Workbook.Descendants<Sheet>().FirstOrDefault(s => s.Name == sheetName);\n if (sheet == null)\n {\n throw new ArgumentException($\"Sheet {sheetName} not found.\", nameof(sheetName));\n }\n\n // 获取工作表数据\n WorksheetPart worksheetPart = (WorksheetPart)workbookPart.GetPartById(sheet.Id);\n SheetData sheetData = worksheetPart.Worksheet.Elements<SheetData>().First();\n var rows = sheetData.Descendants<Row>();\n\n // 获取最大行数和列数\n int rowCount = rows.Count();\n int colCount = rows.Max(r => r.Elements<Cell>().Count());\n\n // 创建二维数组\n string[,] dataArray = new string[rowCount, colCount];\n\n // 遍历所有行\n for (int i = 0; i < rowCount; i++)\n {\n var row = rows.ElementAt(i);\n var cells = row.Elements<Cell>().ToArray();\n\n // 遍历所有列\n for (int j = 0; j < colCount; j++)\n {\n // 如果单元格不存在，则将其视为空\n if (j >= cells.Length || cells[j].CellValue == null)\n {\n dataArray[i, j] = string.Empty;\n }\n else\n {\n string value = cells[j].CellValue.InnerText;\n\n // 假设值是一个共享字符串\n if (cells[j].DataType != null && cells[j].DataType.Value == CellValues.SharedString)\n {\n var stringTable = workbookPart.GetPartsOfType<SharedStringTablePart>().FirstOrDefault();\n if (stringTable != null)\n {\n value = stringTable.SharedStringTable.ElementAt(int.Parse(value)).InnerText;\n }\n }\n dataArray[i, j] = value;\n }\n }\n }\n return dataArray;\n }\n }\n}\n```\n\n在这段代码中，我们首先使用`SpreadsheetDocument.Open`方法打开Excel文件。然后，我们查找具有指定名称的工作表，并获取工作表中的所有行和列。我们计算出最大的行数和列数，以便创建一个适当大小的二维字符串数组。接着，我们遍历所有的行和列，将每个单元格的数据读取到数组中。\n\n如果单元格的数据是共享字符串（即，字符串存在于工作簿的共享字符串表中），我们会检索共享字符串表并获取实际的字符串值。\n\n现在，您可以通过调用`ExcelReader.GetAllSheetData`方法并传递Excel文件的路径和工作表的名称来获取工作表中的所有数据。
using DocumentFormat.OpenXml.Packaging;
using DocumentFormat.OpenXml.Spreadsheet;
using System;
using System.Collections.Generic;
using System.Linq;class Program
{static void Main(){string filePath = "YourExcelFile.xlsx"; // 替换为您的Excel文件路径// 调用方法获取工作表数据string[][] sheetData = ReadExcelFile(filePath, "Sheet1");// 打印数据foreach (var row in sheetData){Console.WriteLine(string.Join("\t", row));}}static string[][] ReadExcelFile(string filePath, string sheetName){List<string[]> sheetData = new List<string[]>();using (SpreadsheetDocument spreadsheetDocument = SpreadsheetDocument.Open(filePath, false)){WorkbookPart workbookPart = spreadsheetDocument.WorkbookPart;Sheet sheet = workbookPart.Workbook.Descendants<Sheet>().FirstOrDefault(s => s.Name == sheetName);if (sheet != null){WorksheetPart worksheetPart = (WorksheetPart)workbookPart.GetPartById(sheet.Id);// 获取工作表中的所有行IEnumerable<Row> rows = worksheetPart.Worksheet.Descendants<Row>();foreach (Row row in rows){// 获取行中的所有单元格IEnumerable<Cell> cells = row.Elements<Cell>();// 将单元格值添加到数组string[] rowData = cells.Select(cell => GetCellValue(workbookPart, cell)).ToArray();sheetData.Add(rowData);}}}return sheetData.ToArray();}static string GetCellValue(WorkbookPart workbookPart, Cell cell){if (cell.DataType != null && cell.DataType == CellValues.SharedString){// 如果单元格类型为共享字符串，则获取共享字符串的值SharedStringTablePart sharedStringTablePart = workbookPart.GetPartsOfType<SharedStringTablePart>().FirstOrDefault();if (sharedStringTablePart != null){int sharedStringIndex = int.Parse(cell.InnerText);return sharedStringTablePart.SharedStringTable.Elements<SharedStringItem>().ElementAt(sharedStringIndex).InnerText;}}// 否则直接获取单元格的值return cell.InnerText;}
}
 用法举例)
