CIMStandardDataConnection cIMStandardDataConnection = new CIMStandardDataConnection()
{
WorkspaceConnectionString = @"SWAPXY=TRUE;SWAPXYFILTER=FALSE;URL=http://sampleserver6.arcgisonline.com/arcgis/services/SampleWorldCities/MapServer/WFSServer;VERSION=2.0.0",
WorkspaceFactory = WorkspaceFactory.WFS,
Dataset = "Continent",
DatasetType = esriDatasetType.esriDTFeatureClass
};
// Add a new layer to the map
var layerPamsDC = new LayerCreationParams(cIMStandardDataConnection);
await QueuedTask.Run(() =>
{
Layer layer = LayerFactory.Instance.CreateLayer<FeatureLayer>(layerPamsDC, MapView.Active.Map);
});