using System.Linq;
using Composite.Data;

namespace Demo
{
    public class Class2
    {
        public static void UpdateData(string userOldName, string userNewName)
        {
            using (DataConnection connection = new DataConnection())
            {
                Demo.User myUser =
                   (from d in connection.Get<Demo.User>()
                    where d.Name == userOldName
                    select d).First();
                myUser.Name = userNewName;
                connection.Update<Demo.User>(myUser);
            }
        }
    }
}