try
        {
            ULCreateParms createParms = new ULCreateParms();
            createParms.CaseSensitive = true;
            createParms.UTF8Encoding = true;
            ULConnectionParms openParms = new ULConnectionParms();
            string appPath = System.IO.Path.GetDirectoryName(Application.ExecutablePath);
            string testPingDbFileName = System.IO.Path.Combine(appPath, "ping.udb");
            openParms.DatabaseOnDesktop = testPingDbFileName;

            if (System.IO.File.Exists(testPingDbFileName) == false)
            {
                iAnywhere.Data.UltraLite.ULDatabaseManager.CreateDatabase(
                openParms.ToString(),
                createParms.ToString()
              );
            }

            ULConnection cn = new ULConnection(openParms.ToString());

            cn.Open();
            cn.SyncParms.PingOnly = true;
            cn.SyncParms.UserName = "sa";
            cn.SyncParms.Stream = ULStreamType.HTTP;
            cn.SyncParms.StreamParms = string.Format("host={0};port={1}",mobilinkServer,mobilinkPort);
            cn.SyncParms.Version = mobilinkVersion;
            cn.Synchronize();
            object a = cn.SyncResult;
            cn.Close();
            isOnline = true;
        }
        catch (Exception ex)
        {
            isOnline = false;
        }