kmllayer.initialize() throwing exception for some kml layers

HumzaAkhtar — Thu, 31 Jul 2014 08:46:24 GMT

i want to display the global gravity data which is in the form of Kml. the link to the file is given below:

ftp://topex.ucsd.edu/pub/global_grav_1min/global_grav.kmz‌

I wrote a small code using ARcGIS API for WPF and tried to initialize this kml file but I received this exception on running the code:

07/31/2014 13:37:39 | Fatal | App | Object reference not set to an instance of an object.

STACKTRACE:    at ESRI.ArcGIS.Client.Toolkit.DataSources.KmlLayer.Refresh()

   at ESRI.ArcGIS.Client.Toolkit.DataSources.KmlLayer.Initialize()

   at ESRI.ArcGIS.Client.GroupLayerBase.Initialize()

   at ESRI.ArcGIS.Client.Toolkit.DataSources.KmlLayer.backgroundWorker_RunWorkerCompleted(Object sender, RunWorkerCompletedEventArgs e)

   at System.ComponentModel.BackgroundWorker.OnRunWorkerCompleted(RunWorkerCompletedEventArgs e)

   at System.ComponentModel.BackgroundWorker.AsyncOperationCompleted(Object arg)

   at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)

   at MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(Object source, Delegate method, Object args, Int32 numArgs, Delegate catchHandler) | Object reference not set to an instance of an object. | | Dispatcher.CatchExceptionStatic => Dispatcher.CatchException => App.App_DispatcherUnhandledException

As we can see that the exception is thrown by ArcGIS API internal functions. My code is given below:

var kmlLayer = new KmlLayer

            {

                Url = new Uri(@"D:\global_grav.kml", UriKind.Absolute),

                ID = "Kml_Samples",

                VisibleLayers = new[] { "*" },



            }; // I downloaded the file and converted it to kml

kmlLayer.Initialize(); // this is where the exception is thrown.

Any ideas about what might be causing this behavior? Any help would be highly appreciated. Thanks

Re: kmllayer.initialize() throwing exception for some kml layers

nakulmanocha — Thu, 31 Dec 2015 23:26:53 GMT

You code looks to ok to me. Have you tried with some other sample kml files. Are you getting the same error?

topic kmllayer.initialize() throwing exception for some kml layers in ArcGIS Runtime SDK for WPF (Retired) Questions

kmllayer.initialize() throwing exception for some kml layers

Re: kmllayer.initialize() throwing exception for some kml layers