如何正确处理互操作Excel应用程序和工作簿?[复制]

(更新:这不是 Why does Microsoft.Office.Interop.Excel.Application.Quit() leave the background process running? ,这个问题是关于当出现异常时如何从内存中释放excel)

var myExcelApp = new Microsoft.Office.Interop.Excel.Application();
Excel.Workbooks AllWorkbooks= xlApp.Workbooks;
Excel.Workbook MyWorkBook= //Open workbook
Excel.Worksheet MySheet= //Open worksheet
//Do the work
MyWorkBook.Close(false, file);
myExcelApp.Quit();
Marshal.FinalReleaseComObject(myExcelApp );
//FInalReleaseComObject for MyWorkBooks

除非抛出异常,然后Excel会在后台逗留,并且必须使用任务管理器将其关闭,否则这一切正常。

using 方块,还是我应该像这样把所有东西都围起来?

Excel.Workbooks AllWorkbooks= null;
Excel.Workbook MyWorkBook=null;
Excel.Worksheet MyWorkshet=null;
Excel.Application myExcelApp=null;         
try{
//Read file here
}
catch{
    MyWorkBook?.Close(false, file);
    myExcelApp?.Quit();
    Marshal.FinalReleaseComObject(myExcelApp );
    //FInalReleaseComObject for MyWorkBooks
}

谢谢