Question

我需要阅读50MB .XLS excel，但我收到此错误：

System.IO.FileFormatException {"File contains corrupted data."}

我选择OpenXMLReader类进行阅读，因为它似乎适合这种情况。但它在第一行代码上崩溃了。

SpreadsheetDocument.Open(filename, false)

可以在此处下载Excel文件： http://www.filedropper.com/saxfile其简单的97-2003 excel测试文件，包含10行

    static void Main(string[] args)
        {
            ReadExcelFileSAX(@"C:\Users\User\Desktop\SAXFile.xls");
        }

    static void ReadExcelFileSAX(string filename)
    {
        using (SpreadsheetDocument myDoc = SpreadsheetDocument.Open(filename, false))
        {
            WorkbookPart workbookPart = myDoc.WorkbookPart;
            WorksheetPart worksheetPart = workbookPart.WorksheetParts.First();

            OpenXmlReader reader = OpenXmlReader.Create(worksheetPart);
            string text;
            while (reader.Read())
            {
                if (reader.ElementType == typeof(CellValue))
                {
                    text = reader.GetText();
                    Console.WriteLine(text);
                }
            }
        }
    }

我缺少什么？

Answer 1

您尝试打开的文件是一个OpenXML二进制格式的Excel文件。

我确定读者一旦检测到它不是有效的ZIP存档就会引发错误。

Answer 2

使用OpenXML之前的这段代码会有所帮助（它将xls保存为xlsx），但它的一点点解决方法

    static void ConvertXlsToXlsx(string xlsFilePath, string xlsxFilePath)
    {
        Microsoft.Office.Interop.Excel.Application excelApp = new Microsoft.Office.Interop.Excel.Application();
        excelApp.Visible = false;

        Microsoft.Office.Interop.Excel.Workbook eWorkbook = excelApp.Workbooks.Open(xlsFilePath, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing);
        eWorkbook.SaveAs(xlsxFilePath, Microsoft.Office.Interop.Excel.XlFileFormat.xlOpenXMLWorkbook, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Microsoft.Office.Interop.Excel.XlSaveAsAccessMode.xlNoChange, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing);
        eWorkbook.Close(false, Type.Missing, Type.Missing);
    }

更好的解决方案是使用不同的库ExcelDataReader https://exceldatareader.codeplex.com/ 我测试和工作（例如打印.CSV到控制台）

    static void XLSFileStreamReader(string filePath)
    {
        FileStream stream = new FileStream(filePath, FileMode.Open);

        // Reading from a binary Excel file ('97-2003 format; *.xls)
        IExcelDataReader excelReader2003 = ExcelReaderFactory.CreateBinaryReader(stream);

        // DataSet - The result of each spreadsheet will be created in the result.Tables
        DataSet result = excelReader2003.AsDataSet();

        // Data Reader methods
        foreach (DataTable table in result.Tables)
        {
            for (int i = 0; i < table.Rows.Count; i++)
            {
                for (int j = 0; j < table.Columns.Count; j++)
                    Console.Write("\"" + table.Rows[i].ItemArray[j] + "\";");
                Console.WriteLine();
            }
        }

        // Free resources (IExcelDataReader is IDisposable)
        excelReader2003.Close();
    }

我在https://gist.github.com/Munawwar/924413

找到了它

PS：FileStream可能应该在USING块中。

OpenXml.Spreadsheet类在简单的excel文件上抛出FileFormatException错误

2 个答案: