private void LoginButtonClicked(object sender, EventArgs e) { Worker selectedEmployee = (Worker)workersDropdown.SelectedItem; string clearPassword = passwordTextBox.Text.Trim() + AppConfig.GetPwdSuffix(); errorLabel.Text = PasswordChecker.VerifyPassword(selectedEmployee.Name, clearPassword) == CheckerVerdict.OK? String.Empty: "Пароль неправильный."; if (String.IsNullOrEmpty(errorLabel.Text)) { WorkerSheetForm workerSheet = new WorkerSheetForm(selectedEmployee.Name, clearPassword); this.Visible = false; workerSheet.ShowDialog(); this.Close(); } passwordTextBox.Text = String.Empty; }