How a particular user can see data in asp.net-mvc3 app

Question

Hi,
   I created Offer controller for creating,editing and deleting offers.and also I created controller for registering,log in,log out.
now my requirement is when user log in he can see only he have created offers and he can able to modify and delete his offers only.
    how to implement this 
below I attached my app.
if any one know the answer plz help me