/// <summary>
///
/// </summary>
void Update()
{
TracerHelper.TraceEntry();
if (_isUpdating == true)
{
return;
}
_isUpdating = true;
List <NewsEvent> events = new List <NewsEvent>();
WebRequest webRequest = WebRequest.Create(_xmlAddress);
webRequest.Timeout = 5000;
WebResponse response = webRequest.GetResponse();
if (response.ContentLength > 0)
{
try
{
XmlDocument document = new XmlDocument();
document.Load(response.GetResponseStream());
XmlNode weeklyEvents = document.ChildNodes[1];
foreach (XmlNode eventNode in weeklyEvents.ChildNodes)
{
events.Add(ParseEventXml(eventNode));
}
}
catch (Exception ex)
{
SystemMonitor.Error("Failed to obtain XML stream [" + ex.Message + "].");
}
}
lock (this)
{
_events.Clear();
_events.AddRange(events);
}
UpdateVisibleEvents();
ChartSeries.RaiseSeriesValuesUpdated(true);
_isUpdating = false;
}