private void btnLogin_Click(object sender, EventArgs e) { if (txtUserName.Visible) { var userId = _command.EnterCredentials(txtUserName.Text, txtPassword.Text); if (userId == null) { MessageBox.Show(@"Entered wrong username\password."); return; } HideUI(userId); } else { var token = _command.Login(); Hide(); //var form = new Buildings(token); var form2 = new Attack(token); form2.Show(); //form.Show(); } }