private void btn_FromAdrToAdr_Click(object sender, EventArgs e)
        {
            string fromAdr = cmb_fromAdr.Text;
            string toAdr   = cmb_toAdr.Text;

            string[]      Reutrn = bcApp.SCApplication.RouteGuide.DownstreamSearchSection(fromAdr, toAdr, 0);
            StringBuilder sb     = new StringBuilder();

            if (string.IsNullOrEmpty(Reutrn[0]))
            {
                sb.AppendLine("SegmentClosed");
            }
            else
            {
                var allRoute = Reutrn[1].Split(';');
                foreach (string route in allRoute)
                {
                    sb.AppendLine(route);
                }
                sb.AppendLine("<MinRoute>");
                sb.AppendLine(Reutrn[0]);
            }
            txt_Route.Text = sb.ToString();

            var minRoute = Reutrn[0].Split('=');

            string[] minRouteSeg = minRoute[0].Split(',');
            bcApp.onTestGuideSectionSearch(minRouteSeg);
        }