public User UpdateUser(User user) { var u = this.Users.SingleOrDefault(x => x.Id.Equals(user.Id)); if (u != null) { u.FirstName = user.FirstName; u.LastName = user.LastName; } return u; }
public User CreateNewUser(User user) { var newUser = new User { Id = this.Users.Max(x => x.Id) + 1, FirstName = user.FirstName, LastName = user.LastName }; this.Users.Add(newUser); return newUser; }