private void btnServiceDirectory_Click(object sender, EventArgs e)
        {
            TerminalService ts     = new TerminalService();
            String          result = ts.requestProviderDirectory(TerminalScreenManager.ProviderCode);

            if (String.IsNullOrEmpty(result))
            {
                MessageBox.Show("Service directory sent to your email address.", "Success", MessageBoxButtons.OK, MessageBoxIcon.Information);
            }
            else
            {
                MessageBox.Show("An error occurred while sending service directory. " + result, "Failure", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }