topic Re: how to get the attributes of a node in a FeatureLayer's cluster? in ArcGIS API for Silverlight Questions

how to get the attributes of a node in a FeatureLayer's cluster?

LianchengRen — Mon, 27 Dec 2010 23:38:25 GMT

A featurelayer has Cluster.

        private void FeatureLayer_Initialized(object sender, EventArgs e)
        {
            ((FeatureLayer)sender).MouseRightButtonDown += new FeatureLayer.MouseButtonEventHandler(FeatureLayer_MouseRightButtonDown);
        }

        private void FeatureLayer_MouseRightButtonDown(object sender, GraphicMouseButtonEventArgs args)
        {
            args.Handled = true;
            string key = (string)args.Graphic.Attributes["JH"];
        }

(string)args.Graphic.Attributes["JH"]: I cannot get the attribute if the clicking graphic is a node of a cluster.

Thanks.

Re: how to get the attributes of a node in a FeatureLayer's cluster?

JenniferNery — Sun, 09 Jan 2011 19:40:45 GMT

This is related thread: http://forums.arcgis.com/threads/18534-FlareClusterer-event-bug Kindly look at post #2. What is returned by FindGraphicsInHostCoordinates() is an IEnumerable<Graphic>, which are the individual nodes contained in the cluster. You can iterate through these nodes and get their attributes.

Re: how to get the attributes of a node in a FeatureLayer's cluster?

LianchengRen — Mon, 10 Jan 2011 04:46:25 GMT

I tried FindGraphicsInHostCoordinates(), but it cannot know which node is clicked.
I make a temporary solution�?set a Maptip and use MapTip.DataContext as IDictionary<string, object> to get the correct attributes now.

This is related thread: http://forums.arcgis.com/threads/18534-FlareClusterer-event-bug Kindly look at post #2. What is returned by FindGraphicsInHostCoordinates() is an IEnumerable<Graphic>, which are the individual nodes contained in the cluster. You can iterate through these nodes and get their attributes.