Latest Contributions by MichaelFrancis

I'm using the JavaScript API, and I've added a bunch of graphics to a graphics layer. I wish to change the opacity of said graphics layer dynamically via a slider on the web page. I move the slider and expect the graphics layer to change, but nothing happens. I logged the graphics layer in my console and can see the opacity value changing, but I can't see the layer change in my view. I even set the fullOpacity property of the view to 0, but my graphics layer doesn't go away, just the basemap. Has anyone come across this before? How did you fix it? ... View more

I'm trying to access the USNG feature service from USNG 1000m UTM18 - NGA_US_National_Grid using: Uri serviceUri = new Uri("url here"); ServiceFeatureTalbe featureTable = new ServiceFeatureTable(serviceUri); Feature layer USNG = new FeatureLayer(featureTable); await USNG.LoadAsync(); but it throws an exception: Invalid JSON. Does anyone know why I can't load this service? I run a query of this service in a browser and it returns what seems to be correct JSON data, so why does Visual Studio throw this exception? ... View more