C＃ – 如何杀死在后台程序运行的excel进程

我创build了一个程序来自动填写发票Excel文件，以便以后打印。 我能够填充单元格并对其进行格式化。 但是excel过程仍在后台运行。

public void Write(tbl_Sale sale,List<SalesModel> saleCollection) { Mouse.SetCursor(Cursors.Wait); Excel.Application application = null; Workbook workbook = null; Worksheet inputSheet = null; Range range = null; try { if (sale != null) { if (saleCollection.Count != 0) { application = new Excel.Application(); FileInfo fileInfo = new FileInfo("Sample.xlsx"); var sheet = "Invoice"; workbook = application.Workbooks.Open(fileInfo.FullName); inputSheet = workbook.Worksheets.Cast<Worksheet>().Where(w => w.Name == sheet).FirstOrDefault(); range = inputSheet.Cells; range.SetValue("G4", sale.Sale_ID); range.SetValue("G5", sale.Sale_Date); Range row = inputSheet.get_Range("A22", Missing.Value).EntireRow; for (int i = 0; i < saleCollection.Count; i++) { row.Insert(XlInsertShiftDirection.xlShiftDown, row); range = inputSheet.Cells; range.SetValue("A" + (22 + i), i + 1); range = inputSheet.Cells; range.SetValue("B" + (22 + i), saleCollection[i].Product.Prod_Code); range = inputSheet.Range["B" + (22 + i) + ":" + "D" + (22 + i)]; range.Merge(); range = inputSheet.Cells; range.SetValue("E" + (22 + i), saleCollection[i].Product.Prod_Name); range = inputSheet.Range["E" + (22 + i) + ":" + "K" + (22 + i)]; range.Merge(); range.HorizontalAlignment = 1; range = inputSheet.Cells; range.SetValue("X" + (22 + i), saleCollection[i].SalesDetail.SaleD_Quantity); range = inputSheet.Range["X" + (22 + i) + ":" + "Y" + (22 + i)]; range.Merge(); range.HorizontalAlignment = 1; range.NumberFormat = "0.00"; range = inputSheet.Cells; range.SetValue("Z" + (22 + i), saleCollection[i].SalesDetail.SaleD_Rate); range = inputSheet.Range["Z" + (22 + i) + ":" + "AA" + (22 + i)]; range.Merge(); range.HorizontalAlignment = 1; range.NumberFormat = "0.00"; range = inputSheet.Cells; range.SetValue("AB" + (22 + i), saleCollection[i].SalesDetail.SaleD_Amount); range = inputSheet.Range["AB" + (22 + i) + ":" + "AD" + (22 + i)]; range.Merge(); range.HorizontalAlignment = 1; ; range.NumberFormat = "0.00"; } range = inputSheet.Cells; range.SetValue("X" + (22 + saleCollection.Count + 2), saleCollection.Sum(s => s.SalesDetail.SaleD_Quantity)); range.SetValue("AB" + (22 + saleCollection.Count + 2), sale.Sale_Total); fileInfo = new FileInfo("Invoices\\" + sale.Sale_ID + ".xlsx"); workbook.Application.DisplayAlerts = false; workbook.SaveAs(fileInfo.FullName, XlFileFormat.xlWorkbookDefault, Type.Missing, Type.Missing, false, false, XlSaveAsAccessMode.xlNoChange, XlSaveConflictResolution.xlLocalSessionChanges ,Type.Missing, Type.Missing, Type.Missing, Type.Missing); releaseObject(row); MessageBox.Show("Invoice exported successfully", "Invoice Export", MessageBoxButton.OK, MessageBoxImage.Information); // Process.Start(fileInfo.FullName); } } } catch (Exception) { MessageBox.Show("Error while generating Excel report"); } finally { workbook.Close(0); application.Quit(); releaseObject(application); releaseObject(workbook); releaseObject(inputSheet); releaseObject(range); GC.Collect(); Mouse.SetCursor(Cursors.Arrow); } } 

我无法从后台杀死excel进程。我不知道我在做什么错误。上面的代码是我为自动化excel做的全部东西。 请帮助我。

Answer 1

我所做的是使用一个初始化和一个Deinitializer的Excel对象，如下所示：

 private void InitializeExcelObjects() { _xlApp = new Excel.Application { SheetsInNewWorkbook = 2, StandardFont = "Tahoma", StandardFontSize = 11 }; _xlBook = _xlApp.Workbooks.Add(Type.Missing); _xlApp.Windows.Application.ActiveWindow.DisplayGridlines = false; _xlSheets = _xlBook.Worksheets; _xlSheet = (Excel.Worksheet)_xlSheets.Item[1]; _xlSheetDelPerf = (Excel.Worksheet)_xlSheets.Item[2]; } private void DeinitializeExcelObjects() { Marshal.ReleaseComObject(_xlSheet); Marshal.ReleaseComObject(_xlSheetDelPerf); Marshal.ReleaseComObject(_xlSheets); _xlBook.Close(false, null, null); Marshal.ReleaseComObject(_xlBook); _xlApp.DisplayAlerts = false; _xlApp.Quit(); Marshal.ReleaseComObject(_xlApp); _xlApp = null; } 

他们被这样调用：

 public void GenerateDuckbilledPlatypusRpt() { try { InitializeExcelObjects(); . . . // all the Excel generation code goes here } finally { DeinitializeExcelObjects(); } } 

IOW，我认为你可以改变你的代码是这样的：

 public void Write(tbl_Sale sale,List<SalesModel> saleCollection) { Mouse.SetCursor(Cursors.Wait); Excel.Application application = null; Workbook workbook = null; Worksheet inputSheet = null; Range range = null; try { . . . InitializeExcelObjects(); . . . } finally { DeinitializeExcelObjects(); Mouse.SetCursor(Cursors.Arrow); } } private void InitializeExcelObjects() { application = new Excel.Application(); workbook = application.Workbooks.Add(Type.Missing); sheets = workbook.Worksheets; inputSheet = (Excel.Worksheet)sheets.Item[1]; } private void DeinitializeExcelObjects() { Marshal.ReleaseComObject(inputSheet); Marshal.ReleaseComObject(sheets); workbook.Close(false, null, null); Marshal.ReleaseComObject(workbook); application.DisplayAlerts = false; application.Quit(); Marshal.ReleaseComObject(application); application = null; } 

这个对我有用; 因人而异

Answer 2

看到这个答案： 我如何正确地清理Excel互操作对象？

你正在使用releaseObject(application) ，但似乎是指你没有显示的一些方法。 不知道在那里做了什么代码。

尝试使用Marshal.ReleaseComObject(application) ，除了注意链接问题中的注意事项。