Editing the whole listview row contents from textbox

Thanks for checking my thread, anyway, heres the my problem

I have a listview, that contains items that are based from a search, the listview's structure looks something like...

ItemCode ----------- Name------------Description----------Owner
ItemCode001--------Itemname001-----Description001-------Owner001
ItemCode123--------Itemname123-----Description00123-----Owner001
ItemCode012--------Itemname012-----Description012-------Owner001


say these items being shown are from a search using 'Owner001' and I want to transfer the ownership to someone else 'Owner002' perhaps that is declared from a textbox, what would the easiest to do this in a click of a button?

Thanks in advance! :)