private bool CheckUserName() { try { using (DBBL data = new DBBL()) { ccounter = data.CheckUsernameValue(tboxUsername.Text, tboxPassword.Text); } } catch (Exception e) { MessageBox.Show(e.ToString()); } if (ccounter == 0) { AttemptCounter = AttemptCounter + 1; if (AttemptCounter > 5) { Application.Exit(); return(false); } else { WrongUsernameLabel.Text = "Pristup odbijen. Ovo je Vaš " + AttemptCounter + ". pokušaj."; WrongUsernameLabel.Visible = true; WrongUsernameLabel.Refresh(); return(false); } } else { try { using (DBBL data = new DBBL()) { User k = data.getKorisnikByParameter(tboxUsername.Text, tboxPassword.Text); Session.LoggedInUser = k; } } catch (Exception ex) { MessageBox.Show(ex.ToString()); } return(true); } }