WienerLinien.Api.Realtime.EchtzeitdatenSchnittstelle.GetMonitorInformationAsync C# (CSharp) Method

        public async Task<MonitorInformation> GetMonitorInformationAsync(List<int> rblList, IHttpClient client=null)
        {
            if (null == rblList || !rblList.Any())
            {
                return new MonitorInformation(MonitorInformationErrorCode.RblNotSpecified);
            }

            var rbls = String.Join("&", rblList.Select(rbl => String.Format("rbl={0}", rbl)));
            var url = String.Format(MonitorApiUrl, rbls, _apiKey, GenerateVrtNoCacheParameterValue());

            if (null == client)
                client = new DefaultHttpClient();

            var response = await client.GetStringAsync(url).ConfigureAwait(false);

            if (null == response)
            {
                return new MonitorInformation(MonitorInformationErrorCode.DownloadingFailed);
            }

            try
            {
                return ParseMonitorResponse(response);
            }
            catch (Exception ex)
            {
                Debug.WriteLine(ex.ToString());
            }

            return
                new MonitorInformation(MonitorInformationErrorCode.ResponseParsingFailed);
        }