Map tiles not loading creating a new map

Gr0bert0

I have a .Net Core application that attempts to show a map in a dialog at a particular viewport. It seems to occasionally encounter the following errors resulting in areas of the map not rendering.

Exception thrown: 'System.IO.IOException' in System.Private.CoreLib.dll
Exception thrown: 'System.Net.Http.HttpRequestException' in System.Net.Http.dll

Bizarrely the same code in the .Net Framework version works without issue.

I've created a couple of test projects that illustrate the problem. It simply creates and displays a map in the window when a button is clicked. The code looks like:

public partial class MapView : UserControl{
public MapView()
{
InitializeComponent();

var map = new Map(Basemap.CreateStreetsVector());

MapPoint mapPoint = new MapPoint(-4.27873, 53, SpatialReferences.Wgs84);
Viewpoint vp = new Viewpoint(mapPoint, 3000);
map.InitialViewpoint = vp;

Map.Map = map;
}
}

I'm using version 100.11.2 and it also fails on 100.10.

Any help would be appreciated. Thanks

MichaelBranscomb

@Gr0bert0 

This issue was challenging to reproduce. But we did eventually detect occasional occurrences of the same exception in our automated daily tests and and have made some associated improvements to our .NET Core / .NET 5 request caching which should resolve this issue.

We would be very grateful if you can you retest in the upcoming v100.12 release and confirm.

 

Thanks