Can not load WFS-Featuretable from URL Hosted on Mapserver

DanielSchuler

When I try to load a WfsFeatureTable from a WFS-Layer hosted on a MapServer, I get the following Error:

Invalid XML.: Parser couldn't move inside bounding box.

Is there any known issue with this topic in the arcgis runtime sdk for .NET 100.9?

I tried to load this Layer with the SampleApplication ArcGISRuntime.WPF.Viewer.Samples.ChangeSublayerVisibility

I had no troubles with loading WFS-FeatureTable with other WFS-Layer for example hosted on a GeoServer.

When I try to connect to the MapServer WFS-Layer on QGIS, there is know problem with this

MatveiStefarov

I think I spotted the problem.  Some of the layers in the capabilities document are missing information about geographic extent.  These layers are:

• ms:aw_masslinien_punkte
• ms:aw_masslinien_linien
• ms:aw_masslinien_text

I see that MapServer actually generates a little warning comment on these layers, right in the XML:

<ows:WGS84BoundingBox/><BR /> <!--WARNING: Optional WGS84BoundingBox could not be established for this layer. Consider setting the EXTENT in the LAYER object, or wfs_extent metadata. Also check that your data exists in the DATA statement-->

Normally Runtime can handle layers without extent or geometry, but here MapServer does something not-by-the-specification. Instead of omitting WGS84BoundingBox completely, MapServer creates empty WGS84BoundingBox elements that lack required child elements.  This causes the XML document to fail validation, and a loading error is reported by Runtime.  I logged a bug with MapServer developers about this behavior.  We will also look into broadening our XML parser's compatibility in future releases, to handle this edge-case and skip empty WGS84BoundingBox elements.

For now, I suggest trying MapServer's recommendation to ensure that all layers on the service have a geographic extent.  Please let me know if this helps.

Cheers,

Matvei