C#操作Excel，调用ApplicationClass.Quit()关闭Excel时，发生异常：Microsoft Office Word 遇到问题需要关闭

应将ApplicationClass.Quit();  放在所有的

System.Runtime.InteropServices.Marshal.ReleaseComObject(xlApp);后面，如：

  if (xlApp != null)
                {
                    System.Runtime.InteropServices.Marshal.ReleaseComObject(xlApp);
                    xlApp = null;
                }

                workBook.Close(false, null, null);
                xlApp.Workbooks.Close();
                xlApp.Quit();  //自动打开Excel，抛异常