使用Microsoft.Office.Interop.Excel另存为错误导出到.xlsx
我正在编写一个模块，使用Microsoft.Office.Interop.Excel将DataTable导出到Excel，但在开始之前，我想要得到非常基础的工作：打开文件，另存为，然后closures。
我已成功打开并保存带有.xls扩展名的文件，但使用.xlsx扩展名保存不起作用。 它写入.xlsx文件，但是当我尝试打开它时出现以下错误：
Excel无法打开文件“SomeFile.xlsx”，因为文件格式无效。 validation该文件没有被损坏，并且文件扩展名与文件的格式匹配。
我用来打开，保存和closures文件的代码是：
Excel.Application excelApplication = new Excel.Application(); //excelApplication.Visible = true; //dynamic excelWorkBook = excelApplication.Workbooks.Add(); Excel.Workbook excelWorkBook = excelApplication.Workbooks.Add(); //Excel.Worksheet wkSheetData = excelWorkBook.ActiveSheet; int rowIndex = 1; int colIndex = 1; excelApplication.Cells[rowIndex, colIndex] = "TextField"; // This works. excelWorkBook.SaveAs("C:\\MyExcelTestTest.xls", Excel.XlFileFormat.xlWorkbookNormal, System.Reflection.Missing.Value, System.Reflection.Missing.Value, false, false, Excel.XlSaveAsAccessMode.xlShared, false, false, System.Reflection.Missing.Value, System.Reflection.Missing.Value, System.Reflection.Missing.Value); // This does not!? excelWorkBook.SaveAs("C:\\MyExcelTestTest.xlsx", Excel.XlFileFormat.xlWorkbookNormal, System.Reflection.Missing.Value, System.Reflection.Missing.Value, false, false, Excel.XlSaveAsAccessMode.xlShared, false, false, System.Reflection.Missing.Value, System.Reflection.Missing.Value, System.Reflection.Missing.Value); excelWorkBook.Close(Missing.Value, Missing.Value, Missing.Value);
我也尝试了文件格式Excel.XlFileFormat.xlExcel12而不是Excel.XlFileFormat.xlWorkbookNormal但是这甚至不写，而是抛出COMException：
来自HRESULT的exception：0x800A03EC
任何帮助解决这个将不胜感激。
编辑：我现在也试过：
excelWorkBook.SaveAs("C:\\MyExcelTestTest", Excel.XlFileFormat.xlExcel12, System.Reflection.Missing.Value, System.Reflection.Missing.Value, false, false, Excel.XlSaveAsAccessMode.xlShared, false, false, System.Reflection.Missing.Value, System.Reflection.Missing.Value, System.Reflection.Missing.Value);
这是如何将相关文件保存为Excel12（.xlsx）文件…这不像你直觉上想的那样使用Excel.XlFileFormat.xlExcel12而是Excel.XlFileFormat.xlOpenXMLWorkbook 。 实际的C＃命令是
excelWorkbook.SaveAs(strFullFilePathNoExt, Excel.XlFileFormat.xlOpenXMLWorkbook, Missing.Value, Missing.Value, false, false, Excel.XlSaveAsAccessMode.xlNoChange, Excel.XlSaveConflictResolution.xlUserResolution, true, Missing.Value, Missing.Value, Missing.Value);
我希望这可以帮助别人在未来。
Missing.Value在System.Reflection命名空间中find。
尝试将SaveAs调用中的第二个参数更改为Excel.XlFileFormat.xlWorkbookDefault。
当我这样做，我生成了一个xlsx文件，我可以成功打开。 （在进行更改之前，我可以生成一个xlsx文件，但是我无法打开它。）
此外，我不知道是否重要，但我正在使用Excel 12.0对象库。
public static void ExportToExcel(DataGridView dgView) { Microsoft.Office.Interop.Excel.Application excelApp = null; try { // instantiating the excel application class excelApp = new Microsoft.Office.Interop.Excel.Application(); Microsoft.Office.Interop.Excel.Workbook currentWorkbook = excelApp.Workbooks.Add(Type.Missing); Microsoft.Office.Interop.Excel.Worksheet currentWorksheet = (Microsoft.Office.Interop.Excel.Worksheet)currentWorkbook.ActiveSheet; currentWorksheet.Columns.ColumnWidth = 18; if (dgView.Rows.Count > 0) { currentWorksheet.Cells[1, 1] = DateTime.Now.ToString("s"); int i = 1; foreach (DataGridViewColumn dgviewColumn in dgView.Columns) { // Excel work sheet indexing starts with 1 currentWorksheet.Cells[2, i] = dgviewColumn.Name; ++i; } Microsoft.Office.Interop.Excel.Range headerColumnRange = currentWorksheet.get_Range("A2", "G2"); headerColumnRange.Font.Bold = true; headerColumnRange.Font.Color = 0xFF0000; //headerColumnRange.EntireColumn.AutoFit(); int rowIndex = 0; for (rowIndex = 0; rowIndex < dgView.Rows.Count; rowIndex++) { DataGridViewRow dgRow = dgView.Rows[rowIndex]; for (int cellIndex = 0; cellIndex < dgRow.Cells.Count; cellIndex++) { currentWorksheet.Cells[rowIndex + 3, cellIndex + 1] = dgRow.Cells[cellIndex].Value; } } Microsoft.Office.Interop.Excel.Range fullTextRange = currentWorksheet.get_Range("A1", "G" + (rowIndex + 1).ToString()); fullTextRange.WrapText = true; fullTextRange.HorizontalAlignment = Microsoft.Office.Interop.Excel.XlHAlign.xlHAlignLeft; } else { string timeStamp = DateTime.Now.ToString("s"); timeStamp = timeStamp.Replace(':', '-'); timeStamp = timeStamp.Replace("T", "__"); currentWorksheet.Cells[1, 1] = timeStamp; currentWorksheet.Cells[1, 2] = "No error occured"; } using (SaveFileDialog exportSaveFileDialog = new SaveFileDialog()) { exportSaveFileDialog.Title = "Select Excel File"; exportSaveFileDialog.Filter = "Microsoft Office Excel Workbook(*.xlsx)|*.xlsx"; if (DialogResult.OK == exportSaveFileDialog.ShowDialog()) { string fullFileName = exportSaveFileDialog.FileName; // currentWorkbook.SaveCopyAs(fullFileName); // indicating that we already saved the workbook, otherwise call to Quit() will pop up // the save file dialogue box currentWorkbook.SaveAs(fullFileName, Microsoft.Office.Interop.Excel.XlFileFormat.xlOpenXMLWorkbook, System.Reflection.Missing.Value, Missing.Value, false, false, Microsoft.Office.Interop.Excel.XlSaveAsAccessMode.xlNoChange, Microsoft.Office.Interop.Excel.XlSaveConflictResolution.xlUserResolution, true, Missing.Value, Missing.Value, Missing.Value); currentWorkbook.Saved = true; MessageBox.Show("Error memory exported successfully", "Exported to Excel", MessageBoxButtons.OK, MessageBoxIcon.Information); } } } catch (Exception ex) { MessageBox.Show(ex.Message, "Exception", MessageBoxButtons.OK, MessageBoxIcon.Error); } finally { if (excelApp != null) { excelApp.Quit(); } } }
myBook.Saved = true; myBook.SaveCopyAs(xlsFileName); myBook.Close(null, null, null); myExcel.Workbooks.Close(); myExcel.Quit();