Save record to database using LINQ to SQL

Hi, I'm trying a simple example of populating a gridview from a view in SQL and updating the records displayed  back to database.

This is how im binding the data to the grid...

Data.BindCustomersDataContext db = new BindCustomersDataContext();
           var items = (from x in db.vwCustomers select x);
            this.gvCustomers.DataSource = items;
            this.gvCustomers.DataBind();

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 select x);
                // Field to update here
                db.SubmitChanges();

            }
        }

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Im having problems with the code above. What I want to do is to update all the records displayed, to the database, with the value from another column from the view.
row. column1 = row.column2
 
Im not sure how to do this. Do I need to query the view every time to get the ID? and how do I get the field to update from the grid??

Thanks!