Sometimes we will debug an ASP.net webapplication by attaching a W3WP.exe process. While Attaching it will many w3wp.exe. To Know the particular w3wp.exe process for our webapplication we need to type a command in CMD.

1) Click Start

2) Run CMD

3) Goto folder by changing directory cd Windows > System32 > Inetsrv

4) Run appcmd list wp

then you will see all the list of processes