public class ElevationProfileResult 

// get the elevation profile for a polyline / set of polylines
var result = await MapView.Active.Map.GetElevationProfileFromSurfaceAsync([lineGeom]);
if (result.Status == SurfaceZsResultStatus.Ok)
{
  var polylineZ = result.Polyline;

  // process the polylineZ
}

// get the elevation profile for a set of points
result = await MapView.Active.Map.GetElevationProfileFromSurfaceAsync(pts);
if (result.Status == SurfaceZsResultStatus.Ok)
{
  var polylineZ = result.Polyline;

  // process the polylineZ
}

// find a specific elevation surface layer
var eleLayer = MapView.Active.Map.GetElevationSurfaceLayers().FirstOrDefault(l => l.Name == "TIN");

// get the elevation profile for a polyline / set of polylines
// use the specific elevation surface layer
var zResult = await MapView.Active.Map.GetElevationProfileFromSurfaceAsync([lineGeom], eleLayer);
if (zResult.Status == SurfaceZsResultStatus.Ok)
{
  var polylineZ = zResult.Polyline;

  // process the polylineZ
}

// get the elevation profile for a set of points
// use the specific elevation surface layer
zResult = await MapView.Active.Map.GetElevationProfileFromSurfaceAsync(pts, eleLayer);
if (zResult.Status == SurfaceZsResultStatus.Ok)
{
  var polylineZ = zResult.Polyline;

  // process the polylineZ
}

int numPoints = 20;

// use the default ground elevation surface
var result = await MapView.Active.Map.GetElevationProfileFromSurfaceAsync(startPt, endPt, numPoints);
if (result.Status == SurfaceZsResultStatus.Ok)
{
  var polylineZ = result.Polyline;

  // process the polylineZ
}

// use a specific elevation surface
var eleLayer = MapView.Active.Map.GetElevationSurfaceLayers().FirstOrDefault(l => l.Name == "TIN");
result = await MapView.Active.Map.GetElevationProfileFromSurfaceAsync(startPt, endPt, numPoints, eleLayer);
if (result.Status == SurfaceZsResultStatus.Ok)
{
  var polylineZ = result.Polyline;

  // process the polylineZ
}

var elevProfileResult = await MapView.Active.Map.GetElevationProfileFromSurfaceAsync(startPt, endPt, 10);
if (elevProfileResult.Status != SurfaceZsResultStatus.Ok)
  return;

if (!MapView.Active.CanShowElevationProfileGraph())
  return;

// show the elevation profile using the result
MapView.Active.ShowElevationProfileGraph(elevProfileResult);