.Net Framework 3.5 Offline solve process

Steps:
1. Go to start menu and search for Command Prompt.

2. Right click on Command Prompt and click on 'Run as administrator'.

3. Now copy and paste the following command in Command Prompt. and hit enter to run.(to paste the command in Command Prompt, copy the command.
Then open Command Prompt window then right click and paste.)
Dism.exe /online /enable-feature /featurename:NetFX3 /All /Source:I:\sources\sxs /LimitAccess
Note: Here J: is my DVD drive. So replace I: with your source DVD drive letter.

4. Within a few moment .Net Framework will be installed on your computer.If you face any problem while running this command in command prompt just Download
 Microsoft .Net Framework 3.5 Offline Installer to install offline.Net Framework. Then...


1. Run the application as administrator.
2. Insert windows 8 installation DVD in DVD drive and change the DVD drive path in .Net Framework 3.5 Offline Installer application.
3. Click on 'Start Installation'. And .Net Framework 3.5 installation will start and complete within a few min.

Errors:
If you still found some error code like
Error: 0x800F0906
Error: 0x800F081F
Error: 0x800F0907
then try online installation method or go to This Link of Microsoft for details and troubleshooting.