private void btnPrijava_Click(object sender, EventArgs e) { if (KontrolerKorisnickogInterfejsa.poveziSeNaServer()) { t = new Timer(); t.Interval = 1000; t.Tick += ProveriServer; t.Start(); if (txtUsername.Text == "") { MessageBox.Show("Niste uneli username!"); txtUsername.Focus(); return; } if (txtPassword.Text == "") { MessageBox.Show("Niste uneli password!"); txtPassword.Focus(); return; } if (KontrolerKorisnickogInterfejsa.PrijaviRadnika(txtUsername, txtPassword)) { this.Hide(); new PocetnaForma().ShowDialog(); try { this.Show(); } catch (Exception) { } } } }