install .NET Framework 3.5 online or offline

Windows 8,10 does not include .NET 3.5 (include .NET 2.0 and 3.0) by default but comes preinstalled in Windows 7.
Nowdays,Almost all software require Microsoft .NET Framework installed in our system.
we might face a problem while trying to run a program which requires .NET Framework 3.5 version.
If we try to install it in online with low bandwith (slow) internet ,it gives pain on head.
I personally perfered you to install in offline mode which takes almost 2 (maximum 5) minutes and is very easy to do.
We can make this feature  enable by check in Program and Features if it had already install.If not we need to install it through online or offline.

There are two step to enable this feature:
The following are the steps to enable .NET Framework 3.5 (include .NET 2.0 and 3.0) feature .
Step 1.1 :Go to Control Panel then choose Programs.
Step 1.2 :Click 'turn windows feature on or off'.
Step 1.3 :We can enable this feature by clicking  on .NET Framework 3.5 (include .NET 2.0 and 3.0)and  click OK.
After this step, it will download the entire package from internet if we click 'install this feature' in window pop up and
install the .NET Framework 3.5 feature if internet is active.
but we can can install this feature in offline mode if we don't have internet connection or slow connection.
For offline installization we need Windows 8 DVD or ISO image and need to  follow the steps below:
Step 2.1 : Insert Windows 8 DVD or mount ISO image(open iso image,it will be shown as drive) and note respective drive letter.
Step 2.2 : open command prompt(admin).
 To open command prompt admin goto window logo(corner) and right click on it then you will see it. click on it.
Step 2.3 :Type command inside here
"Dism.exe /online /enable-feature /featurename:NetFX3 /All /LimitAccess /Source:G:\sources\sxs"
in command prompt by replacing "G" with your drive letter(windows setup file) and hit enter
After completing this you have fully installed .NET Framework 3.5.
enjoy your day