Windows 10 hidden '.net framework' installation

Do you know, that you can install Dot Net framework on your windows 10 pc or laptop without internet or any download All you need to do is to follow these steps.:-

 Requirements:-
           1) Windows 10 installed on your pc
           2) Windows 10 installation media ( may be image file(.iso)  or the dvd of windows 10)
       
If you have these with you.Follow these steps.
    
          1) Open your windows cd or image whatever you have on your pc.
          2) You will find a folder named ' Sources'.
          3) Copy that folder on the C drive.

         4) Now open  command prompt with administrator rights. and copy and paste following commands exactly-
        
Dism /online /enable-feature /featurename:NetFx3 /All /Source:"C:\sources\sxs /LimitAccess "

   but if you don't have the C drive in your pc. or you have copied it in another drive just give the path of it and just replace the drive letter 'C' in above red lines with yours.

    5) Now press 'Enter' and let the command execute.It will take several minutes.but will do your work surely.

     6) After the installation you can delete the 'sources' folder or you can keep it to showoff your friends with this new technique.

         If you have any problems please do comment. I will review your comments.
             Thank you.