public IActionResult Profile(NotesBindingModel notesBindingModel) { User user = null; using (var context = new NotesDbContext()) { user = context.Users.FirstOrDefault(u => u.Id == int.Parse(notesBindingModel.UserId)); if (notesBindingModel.Title == "" || notesBindingModel.Content == "") { this.ViewModel["message"] = "Empty input fields !"; this.ViewModel["username"] = user.Username; var notes = context.Notes.Where(n => n.OwnerId == user.Id).ToArray(); this.ViewModel["notes"] = notes.Any() ? string.Join(string.Empty, notes .Select(u => $"<li><a href=\"/users/note?id={u.Id}\">{u.Title}</a> - {u.Content}</li>")) : $"<p>No notes for this user !</p>"; return(View()); } Note note = new Note { Content = notesBindingModel.Content, Title = notesBindingModel.Title, Owner = user }; context.Notes.Add(note); context.SaveChanges(); } return(Redirect($"/users/profile?id={user.Id}")); }