从ASP.NET MVC 4更新数据库

I've just started using mvc 4 and am having trouble updating my database. In my database I have a table called seats with two columns: seatnum and status. Below I am selecting the seats where the status matches the seat numbers contained in the seatss string(A1, A2 etc) I want to update the status to the value of the ID string but have no idea how to implement this.I've just started using mvc 4 and am having tro