Can I Connect Database Sql Server With Mvc 4 Project? If Yes Then What Is The Code Step By Step Please Help Me .

You can try something on your own at first and when you stuck anywhere, anyone from here would do his/her best to help you out. But don't directly ask for the source code.
Read the Code Project Quick Answers FAQ[^] first :)

This might help you-
http://www.asp.net/mvc/overview/older-versions/hands-on-labs/aspnet-mvc-4-models-and-data-access[^]
http://www.c-sharpcorner.com/UploadFile/Dorababu742/mvc-4-entity-in-sql-server/[^]
https://www.youtube.com/watch?v=sLmexGbVF1o[^]
http://mvc4beginner.com/Tutorial/Creating-a-Connection-String-&-Working-With-SQL-Server-Compact.html[^]
http://tutorials.slcdev.com/2012/03/mvc4-sqlexpress-connection/[^]

-KR