Question

我正在编写一个模块，使用Microsoft.Office.Interop.Excel将DataTable导出到Excel，但在开始认真之前，我想让基础知识正常工作：打开文件，另存为，然后关闭。

我已成功打开并保存扩展名为.xls的文件，但使用.xlsx扩展名保存不起作用。它写了.xlsx文件，但是当我尝试打开它时，我收到以下错误：

Excel无法打开文件'SomeFile.xlsx'，因为文件格式无效。验证文件是否已损坏，文件扩展名是否与文件格式匹配。

我用来打开，保存和关闭文件的代码是：

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);

我还尝试使用文件格式Excel.XlFileFormat.xlExcel12代替Excel.XlFileFormat.xlWorkbookNormal，但这甚至没有写入而是抛出COMException：

HRESULT的异常：0x800A03EC

任何有助于解决此问题的帮助都将非常受欢迎。

编辑：我现在也尝试过：

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);

Answer 1

这是将相关文件保存为Excel12（.xlsx）文件的方法......这不是您直观地想到的，即使用Excel.XlFileFormat.xlExcel12但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);

我希望将来可以帮助别人。

在Missing.Value命名空间中找到了

System.Reflection。

Answer 2

尝试将SaveAs调用中的第二个参数更改为Excel.XlFileFormat.xlWorkbookDefault。

当我这样做时，我生成了一个能够成功打开的xlsx文件。（在进行更改之前，我可以生成一个xlsx文件，但我无法打开它。）

另外，我不确定它是否重要，但我正在使用Excel 12.0对象库。

Answer 3

    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();
            }
        }



    }

Answer 4

myBook.Saved = true;
myBook.SaveCopyAs(xlsFileName);
myBook.Close(null, null, null);
myExcel.Workbooks.Close();
myExcel.Quit();

使用Microsoft.Office.Interop.Excel SaveAs Error导出到.xlsx

4 个答案: