Dynamic Service Layer Loaded?

Question

Hi,
How do I tell when a ArcGISDynamicMapServiceLayer has loaded all the Layers in the LayerInfo Array?

I am trying to set the VisibleLayers property but this doesn't seem to work by the time the Layer.Initialized event fires.  If I wait a while and the run the same code (presumably after the layers are fully loaded) then it works.

Any advice?

Thanks in advance, Matt

MatthewPilgrim · Answer

Hi,

I am trying to set the VisibleLayers property in MapPrinter.InitializePrintMap (in your Print example).  if (toLayer != null)
    {
     toLayer.InitializationFailed += (s, e) => { }; // to avoid crash if bad layer
                    toLayer.Initialized += (s, e) => {

CopyLayerVisibility((Layer)s, toLayer);

};

printMap.Layers.Add(toLayer);
    }

This loops though the feature layers in the main maps dynamic layer building an list of visible ones and then sets them on the print maps dynamic layer [ToLayer].  i.e.ESRI.ArcGIS.Client.ArcGISDynamicMapServiceLayer printdynamicService = (ESRI.ArcGIS.Client.ArcGISDynamicMapServiceLayer)ToLayer;
                    printdynamicService.VisibleLayers = visibleLayerList.ToArray();

This doesn't work when the printmap is first initialized.  If I call the same code sometime later from PreparePages (called by clicking the scale fixed checkbox) then it works.

Matt

DominiqueBroux · Answer

When all layers of a map are initialized, the event 'LayersInitialized' fires on LayerCollection object.
 
So you can hook up with a code like : 
myMap.Layers.LayersInitialized += ....

That being said it's strange that your code is not working by the time the Layer.Initialized event fires. In my opinion, it should work. What is doing your code exactly?