} // private GraphicsLayer addRLL2Map(GraphicsLayer rl)
/// <summary>
/// If RL layer exists reload RL data and reattach RLL to map.
/// Called from timer when map layers loaded.
/// Set mapstate=Processing or Ready
/// </summary>
private void renewRL()
{
log(string.Format("VRedlineImpl.renewRL"));
if (mapState != VMapState.Loaded)
{
return;
}
mapState = VMapState.Processing;
var lyr = MapApplication.Current.SelectedLayer;
//load RL content
var gl = reloadRLData(MapApplication.Current.Map, VRedlineImpl.layerID, VRedlineImpl.layerName);
if (gl == null)
{
mapState = VMapState.Ready;
log(string.Format("VRedlineImpl.renewRL, RL layer doesn't exists"));
return;
}
log(string.Format("VRedlineImpl.renewRL, symbols restored"));
// attach RL layer to map in right way
marks = new GraphicCollection(gl.Graphics);
MapApplication.Current.Map.Layers.Remove(gl);
addRLL2Map(gl);
if (gl.ID == lyr.ID)
{
MapApplication.Current.SelectedLayer = gl;
}
log(string.Format("VRedlineImpl.renewRL done"));
return;
} // private void renewRL()
//Adding symbols from each entry read from the feed to the graphics object of the layer
private void wc_OpenReadCompleted(object sender, OpenReadCompletedEventArgs e)
{
if (e.Error != null)
{
if (LoadFailed != null)
{
LoadFailed(this, new RssLoadFailedEventArgs()
{
ex = new Exception("Error in Reading the RSS feed. Try Again later!", e.Error),
UserState = e.UserState
});
}
return;
}
ESRI.ArcGIS.Client.GraphicCollection graphics = new ESRI.ArcGIS.Client.GraphicCollection();
using (Stream s = e.Result)
{
SyndicationFeed feed;
List <SyndicationItem> feedItems = new List <SyndicationItem>();
using (XmlReader reader = XmlReader.Create(s))
{
feed = SyndicationFeed.Load(reader);
foreach (SyndicationItem feedItem in feed.Items)
{
SyndicationElementExtensionCollection ec = feedItem.ElementExtensions;
string x = "";
string y = "";
foreach (SyndicationElementExtension ee in ec)
{
XmlReader xr = ee.GetReader();
switch (ee.OuterName)
{
case ("lat"):
{
y = xr.ReadElementContentAsString();
break;
}
case ("long"):
{
x = xr.ReadElementContentAsString();
break;
}
case ("point"):
{
string sp = xr.ReadElementContentAsString();
string[] sxsy = sp.Split(new char[] { ' ' });
x = sxsy[1];
y = sxsy[0];
break;
}
}
}
if (!string.IsNullOrEmpty(x))
{
Graphic graphic = new Graphic()
{
Geometry = new MapPoint(Convert.ToDouble(x), Convert.ToDouble(y))
};
graphic.Attributes.Add("Title", feedItem.Title.Text);
graphic.Attributes.Add("Summary", feedItem.Summary.Text);
graphic.Attributes.Add("PublishDate", feedItem.PublishDate);
graphic.Attributes.Add("Id", feedItem.Id);
graphics.Add(graphic);
}
}
}
}
//Invoking the initialize method of the base class to finish the initialization of the graphics layer:
if (LoadCompleted != null)
{
LoadCompleted(this, new RssLoadedEventArgs()
{
Graphics = graphics,
UserState = e.UserState
}
);
}
}
