public Layer CreateLayer( 
   Uri dataUri,
   ILayerContainerEdit container,
   int index,
   string layerName
)

{
    //* string url = @"c:\data\project.gdb\DEM";  //Raster dataset from a FileGeodatabase
    //* string url = @"c:\connections\mySDEConnection.sde\roads";  //FeatureClass of a SDE
    //* string url = @"c:\connections\mySDEConnection.sde\States\roads";  //FeatureClass within a FeatureDataset from a SDE
    //* string url = @"c:\data\roads.shp";  //Shapefile
    //* string url = @"c:\data\imagery.tif";  //Image from a folder
    //* string url = @"c:\data\mySDEConnection.sde\roads";  //.lyrx or .lpkx file
    //* string url = @"c:\data\CAD\Charlottesville\N1W1.dwg\Polyline";  //FeatureClass in a CAD dwg file
    //* string url = @"C:\data\CAD\UrbanHouse.rvt\Architectural\Windows"; //Features in a Revit file
    //* string url = @"http://sampleserver1.arcgisonline.com/ArcGIS/rest/services/Demographics/ESRI_Census_USA/MapServer";  //map service
    //* string url = @"http://sampleserver6.arcgisonline.com/arcgis/rest/services/NapervilleShelters/FeatureServer/0";  //FeatureLayer off a map service or feature service

    string urlRoads = @"c:\data\project.gdb\roads";  //FeatureClass of a FileGeodatabase
                                                     //Note: Needs QueuedTask to run
    Uri uri = new Uri(urlRoads);
    var newLayer = LayerFactory.Instance.CreateLayer(uri, MapView.Active.Map);
}

{
    string urlRatser = @"C:\Images\Italy.tif";
    await QueuedTask.Run(() =>
    {
        // Create a raster layer using a path to an image.
        // Note: You can create a raster layer from a url, project item, or data connection.
        //Note: needs to be called on the MCT
        var rasterLayerToCreate = LayerFactory.Instance.CreateLayer(new Uri(urlRatser), map) as RasterLayer;
    });
}

{
    //Path to mosaic dataset
    string urlItaly = @"C:\Images\countries.gdb\Italy";
    //Note: Run within a QueuedTask
    // Create a mosaic layer using a path to a mosaic dataset.
    // Note: You can create a mosaic layer from a url, project item, or data connection.
    mosaicLayer = LayerFactory.Instance.CreateLayer(new Uri(urlItaly), map) as MosaicLayer;
}

{
    string urlToUse =
    @"http://imagery.arcgisonline.com/arcgis/services/LandsatGLS/GLS2010_Enhanced/ImageServer";
    // Create an image service layer using the url for an image service.
    //Note: Run within a QueuedTask
    var isLayer = LayerFactory.Instance.CreateLayer(new Uri(urlToUse), map) as ImageServiceLayer;
}

{
  // Note: call within QueuedTask.Run()
  {
    var url = @"https://geoeventsample1.esri.com:6443/arcgis/rest/services/LABus/StreamServer";
    var uri = new Uri(url, UriKind.Absolute);
    var createParams = new FeatureLayerCreationParams(uri)
    {
      RendererDefinition = new SimpleRendererDefinition()
      {
        SymbolTemplate = SymbolFactory.Instance.ConstructPointSymbol(
                            ColorFactory.Instance.BlueRGB,
                            12,
                     SimpleMarkerStyle.Pushpin).MakeSymbolReference()
      }
    };
    streamLayer = LayerFactory.Instance.CreateLayer<StreamLayer>(
                        createParams, map);
  }
}

{
  // Note: call within QueuedTask.Run()
  {
    //Must be a .NetCDF file for voxels
    var url = @"C:\MyData\AirQuality_Redlands.nc";
    var cim_connection = new CIMVoxelDataConnection()
    {
      URI = url
    };
    //Create a VoxelLayerCreationParams
    var createParams = VoxelLayerCreationParams.Create(cim_connection);
    createParams.IsVisible = true;

    //Can also just use the path directly...
    //var createParams = VoxelLayerCreationParams.Create(url);

    //Use VoxelLayerCreationParams to enumerate the variables within
    //the voxel
    var variables = createParams.Variables;
    foreach (var variable in variables)
    {
      var line = $"{variable.Variable}: {variable.DataType}, " +
         $"{variable.Description}, {variable.IsDefault}, {variable.IsSelected}";
      System.Diagnostics.Debug.WriteLine(line);
    }
    //Optional: set the default variable
    createParams.SetDefaultVariable(variables.Last());

    //Create the layer - map must be a local scene
    voxelLayer = LayerFactory.Instance.CreateLayer<VoxelLayer>(createParams, map);
  }
}