private void UpdateLayer(Layer layer)
{
if (FilteredLayer == null || !LayerAutoUpdateBehavior.IsLayerAutoUpdateCapable(layer))
{
return;
}
if (layer.Dispatcher.CheckAccess())
{
UpdateLayerUI(layer);
}
else
{
layer.Dispatcher.BeginInvoke(new AutoUpdateRefreshDelegate(UpdateLayerUI), layer);
}
}
/// <summary>
/// Method that is called on the Main UI thread
/// </summary>
private void UpdateLayerUI(Layer layer)
{
// verify the layer has not been removed from the map already
if (ParentBehavior == null || !ParentBehavior.MapContainsLayer(layer))
{
return;
}
if (layer != null && LayerAutoUpdateBehavior.IsLayerAutoUpdateCapable(layer))
{
try
{
if (layer is FeatureLayer)
{
// We only need to make sure the client caching is off while we
// do this update, and then return it to the original state.
bool cachingDisabled = ((FeatureLayer)layer).DisableClientCaching;
if (!cachingDisabled)
{
((FeatureLayer)layer).DisableClientCaching = true;
}
((FeatureLayer)layer).Update();
if (!cachingDisabled)
{
((FeatureLayer)layer).DisableClientCaching = false;
}
}
else if (layer is ArcGISDynamicMapServiceLayer)
{
// We only need to make sure the client caching is off while we
// do this update, and then return it to the original state.
bool cachingDisabled = ((ArcGISDynamicMapServiceLayer)layer).DisableClientCaching;
if (!cachingDisabled)
{
((ArcGISDynamicMapServiceLayer)layer).DisableClientCaching = true;
}
((ArcGISDynamicMapServiceLayer)layer).Refresh();
if (!cachingDisabled)
{
((ArcGISDynamicMapServiceLayer)layer).DisableClientCaching = false;
}
}
else if (layer is ICustomGraphicsLayer)
{
((ICustomGraphicsLayer)layer).Update();
}
}
catch (Exception ex)
{
Console.WriteLine("Layer Update failed. " + ex);
}
_refreshRunning = false;
// start the timer back up if the layer is still using auto updates
if (LayerExtensions.GetAutoUpdateInterval(layer) > 0.0)
{
StartRefreshTimer();
}
}
}