public UserForm(User user, int id) { InitializeComponent(); proxy = new ServiceReference1.Service1Client(); fajl = new Fajl(); us = user; userId = id; //MessageBox.Show(Convert.ToString(userId)); label2.Text = user.Ime; List <string> pomNiz = new List <string>(); pomNiz = proxy.getUserFiles(userId).ToList(); foreach (string el in pomNiz) { fajloviList.Items.Add(el); } }