Query features in a WMSLayer? code sample?

[JerryGarcia]

Can someone provide a code sample which queries features in a WMS layer in ArcMap?

All I need to know is if the layer contains any map features.

Thanks!

[JerryGarcia]

I'm trying to remove layers which have zero map features.  Unfortunately, the returned array from IIdentify::Identify is always null.

                IWMSGroupLayer wmsGroupLayer = (IWMSGroupLayer)wmsMapLayer.Layer[0];
                for (int layerCount = 0; layerCount < wmsGroupLayer.Count; layerCount++)
                {
                    ILayer lyr = (ILayer)wmsGroupLayer.Layer[layerCount];

                    ESRI.ArcGIS.Geodatabase.IGeoDataset geoDS = (ESRI.ArcGIS.Geodatabase.IGeoDataset) lyr;
                
                    IIdentify id = (IIdentify) lyr;
                    IArray idArray = (IArray)id.Identify(geoDS.Extent);
                    if (idArray == null)
                    {
                        Log(lyr.Name + "; Feat Count: null (zero)");
                        //wmsGroupLayer.Delete(lyr);
                        //layerCount -= 1;
                    }
                    else
                    {
                        Log(lyr.Name + "; Feat Count: " + idArray.Count);
                    }
                }

[JerryGarcia]

I guess this is a bug: IIdentify::Identify is always null.

Can anyone provide a code sample which shows differently?