hi Developers i have a table Called tblPrice

i want to Calculate Calculate the Total Table Particular Column Row Values. in my tblPrice table if i have values like

Id Name Cost 1 Mobile 1000 2 T.V. 2000 3 Camera 500

My Expected the Output is should be 3500. (Cost Column Row[1]+Row[2]+Row[3]) i am try to do i did't get exact output. so please help me to how i done my Requirement . I have no time so i can't able to try more

thanking You Paul.S