Feature layer update method exception

MarkCollins — Tue, 17 Apr 2012 17:05:44 GMT

I believe I have found a bug in the feature layer update routing. I am displaying a feature layer with several thousand points and have its mode set to OnDemand. My application has a timer which calls Update and Refresh on the layer to update the display every minute. If I am panning the map and its attempting to update the layer while my timer fires I receive the following error???.

System.NullReferenceException was unhandled by user code
Message=Object reference not set to an instance of an object.
Source=ESRI.ArcGIS.Client
StackTrace:
       at ESRI.ArcGIS.Client.FeatureLayer.update()
       at ESRI.ArcGIS.Client.FeatureLayer.Update()
       at NGC.WinUI.CADControls.Mapping.AutoRefresh._tmr_Tick(Object sender, EventArgs e) in C:\Users\Mark\Documents\Visual Studio 2010\Projects\XXX\Mapping\AutoRefresh.cs:line 158
       at System.Windows.Threading.DispatcherTimer.FireTick(Object unused)
       at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Boolean isSingleParameter)
       at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Boolean isSingleParameter, Delegate catchHandler)
InnerException:

Its appears as if this exception is being throw up from the ESRI code base. Just thought I would drop you a line on this. I am wrapping my timer update code in some exception handling for the time being.

topic Feature layer update method exception in ArcGIS Runtime SDK for WPF (Retired) Questions

Feature layer update method exception