How to display database data in webgrid in mvc 4

http://dotnetawesome.blogspot.in/2014/04/how-to-display-database-data-in-webgrid-in-mvc4.html
http://dotnetawesome.blogspot.in/2014/06/how-to-implement-custom-user-defined-minimum-age-validation-rule-mvc4.html#at_pco=smlwn-1.0&at_tot=1&at_ab=per-13&at_pos=0&at_si=541b0ca472ba1312