for /f "delims=" %%a in ('cscript //nologo a.vbs') do echo %%a 

Set objDialog = CreateObject("UserAccounts.CommonDialog")

objDialog.Filter = "所有文件|*.*"

objDialog.InitialDir = "c:\"

tfile=objDialog.ShowOpen

if tfile then

        strLoadFile = objDialog.FileName

        WScript.Echo strLoadFile

else

        wscript.quit

end if