clay@icsnews.com

HeatMap null object reference

Discussion created by clay@icsnews.com on Nov 22, 2013
Latest reply on Nov 24, 2013 by MBranscomb-esristaff
I"m trying to use the heat map and keep receiving this error when I make the layer visible.
System.NullReferenceException was caught
  HResult=-2147467261
  Message=Object reference not set to an instance of an object.
  Source=ESRI.ArcGIS.Client.Toolkit.DataSources
  StackTrace:
       at ESRI.ArcGIS.Client.Toolkit.DataSources.HeatMapLayer.GetSource(Envelope extent, Int32 width, Int32 height, OnImageComplete onComplete)
       at ESRI.ArcGIS.Client.DynamicLayer.Draw(Envelope extent, Double resolution, MapPoint canvasOrigin, Boolean useTransitions, Boolean isContinuous)
       at ESRI.ArcGIS.Client.Map.loadLayerInView(Boolean useTransitions, Envelope drawExtent, Layer layer, Boolean isContinuous, Double scale)
       at ESRI.ArcGIS.Client.Map.layer_OnLayerChanged(Object sender, EventArgs args)
       at ESRI.ArcGIS.Client.Layer.OnLayerChanged()
       at ESRI.ArcGIS.Client.Toolkit.DataSources.HeatMapLayer.heatMapPoints_CollectionChanged(Object sender, NotifyCollectionChangedEventArgs e)
       at System.Collections.ObjectModel.ObservableCollection`1.OnCollectionChanged(NotifyCollectionChangedEventArgs e)
       at ESRI.ArcGIS.Client.Geometry.PointCollection.OnCollectionChanged(NotifyCollectionChangedEventArgs e)
       at System.Collections.ObjectModel.ObservableCollection`1.InsertItem(Int32 index, T item)
       at System.Collections.ObjectModel.Collection`1.Add(T item)
       at ICSnet.Windows.Controls.ArcGIS.RuntimeMap.PlotCrimeAnalysis(Object sender, PlotCrimeAnalysisEventArgs e)
  InnerException: 


Everything I've done is standard, straight from the Runtime SDK HeatMap example. The only difference I have is that instead of filling it with 1000 bogus points I'm using actual data from our database. Any ideas?

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