DOT NETFRAMEWORK 3.5 OFFLINE On Demand ~ Softwares On Demand -SOD

Copy sxs folder(sources/sxs) from your iso disk img or from ur bootable pen drive,put this folder into C drive
Now open CMD with ADMIN rights
Copy and paste this code from description
dism /online /get-features
dism /online /enable-feature /featurename:netfx3 /all /source:c:\sxs /limitaccess

Hurrraaayyy now u have enabled .net frmwrk 3.5 without internet
Subscribe me if like my work ;)