Button to launch current directory in Explorer

Trying to figure out how to make a button to launch the current directory I am in, with Window Explorer.
Thanks

Figured out one way don't know if that is the best way but it seems to work.

@echo off
chcp 1252 > nul
C:
cd "C:\Windows"
start explorer.exe {sourcepath}

This should work too

@async:C:\Windows\explorer.exe {sourcepath}

I use this:

Explorer /e, {sourcepath$}

No need for MS-DOS stuff or @async, but the "/e," argument before the path is needed for some folders, if I remember correctly.