ArcGIS Pro图层组使用和查询

 await QueuedTask.Run(() =>
      {
        ReadOnlyObservableCollection lstLays;
        lstLays = MapView.Active.Map.Layers;
        foreach (Layer lay in lstLays)
        { 
          if (lay is GroupLayer)
          {
            GroupLayer pGrpLay = (GroupLayer)lay;
            ReadOnlyObservableCollection featureLayers = pGrpLay.Layers;
            foreach (FeatureLayer fLay in featureLayers)
            {
              CIMBaseLayer fLayDef = fLay.GetDefinition();
              string pLayName = fLayDef.Name;
              MessageBox.Show(pLayName);
            }
          }
        }
      });