private void Button_Click(object sender, RoutedEventArgs e)
        {
            if (txtbox_password.Password.ToString() == "")
            {
                showErrorAndFocusField(txtbox_password);
            }
            else if (txtbox_Confirm_Password.Password.ToString() == "")
            {
                showErrorAndFocusField(txtbox_Confirm_Password);
            }
            else if (txtbox_question.Text == "")
            {
                labelError.Content = "Complete the fields marked";
                txtbox_question.Focus();
                txtbox_question.Foreground = (Brush)brushConverter.ConvertFrom("#e74c3c");
            }
            else
            {
                setLog();

                userservice.userNew(txtbox_password.Password.ToString(), Combo_question.Text, txtbox_question.Text);

                MaterialDesignThemes.Wpf.DialogHost.CloseDialogCommand.Execute(null, null);
            }
        }