Question

使用.net 4.5

我试图使用EPPlus（v4.0.4）读取.xls / .xlsx文件，但收到错误。 SO对同一错误有疑问，但没有任何关联或解决我的问题。

issuetype = {'name' : 'Bug'}

错误发生在protected void Page_Load(object sender, EventArgs e) { GetDataTableFromExcel(@"D:\test.xlsx"); } private DataTable GetDataTableFromExcel(string path, bool hasHeader = true) { using (var pck = new OfficeOpenXml.ExcelPackage()) { using (var stream = File.OpenRead(path)) { pck.Load(stream); } var ws = pck.Workbook.Worksheets[1]; DataTable tbl = new DataTable(); foreach (var firstRowCell in ws.Cells[1, 1, 1, ws.Dimension.End.Column]) { tbl.Columns.Add(hasHeader ? firstRowCell.Text : string.Format("Column {0}", firstRowCell.Start.Column)); } var startRow = hasHeader ? 2 : 1; for (int rowNum = startRow; rowNum <= ws.Dimension.End.Row; rowNum++) { var wsRow = ws.Cells[rowNum, 1, rowNum, ws.Dimension.End.Column]; DataRow row = tbl.Rows.Add(); foreach (var cell in wsRow) { row[cell.Start.Column - 1] = cell.Text; } } return tbl; } }

写入操作期间发生磁盘错误。（例外 HRESULT：0x8003001D（STG_E_WRITEFAULT）

Answer 1

我们首先可以使用Microsoft.Office.Introp.excel将xls文件转换为xlsx格式，然后在转换后使用新格式的文件通过EPPPLUS进行读取。

 public static DataTable ReadExcelFileToDataTable(string filePath, bool isFirstRowHeader = true)
        {
            #region  Convert xls file to xlsx file
           // Convert xls file to xlsx file --to use below code Microsoft.Excel must installed on the system on which cod eis running

                var app = new Microsoft.Office.Interop.Excel.Application();
                var web = app.Workbooks.Open("");
                web.SaveAs(filePath + ".x", FileFormat: Microsoft.Office.Interop.Excel.XlFileFormat.xlOpenXMLWorkbook);
                web.Close();
                app.Quit();

            #endregion
            var newFileName = filePath + ".x";
            DataTable tbl = new DataTable(); ;

            Excel.ExcelPackage xlsPackage = new Excel.ExcelPackage(new FileInfo(newFileName));  //using Excel = OfficeOpenXml;    <--EPPLUS
            Excel.ExcelWorkbook workBook = xlsPackage.Workbook;

            try
            {
                Excel.ExcelWorksheet wsworkSheet = workBook.Worksheets[0];

                    foreach (var firstRowCell in wsworkSheet.Cells[1, 1, 1, wsworkSheet.Dimension.End.Column]) 
                    {
                        var colName = "";
                        colName = firstRowCell.Text;
                        tbl.Columns.Add(isFirstRowHeader ? colName : string.Format("Column {0}", firstRowCell.Start.Column)); 
                    }
                    var startRow = isFirstRowHeader ? 2 : 1;
                    for (int rowNum = startRow; rowNum <= wsworkSheet.Dimension.End.Row; rowNum++)
                    {
                        var wsRow = wsworkSheet.Cells[rowNum, 1, rowNum, wsworkSheet.Dimension.End.Column];
                        DataRow row = tbl.Rows.Add();
                        foreach (var cell in wsRow)
                        {
                            row[cell.Start.Column - 1] = cell.Text;
                        }
                    }

            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.Message);
            }

            return tbl;
        }

如何使用EPPlus阅读excel

1 个答案: