How to save and retrive value of checkboxfor in mvc???

Question

i am using single checkboxfor if checkboxfor is check value is save successfully but how to retrive and if checked then check else not check.......and i am saving db value if checkboxfor is checked then then save  "A" otherwise "N"......if i am retrive db data then fetch "A" then how to assign checkbox value and checkboxfor is checked.....plz help me