ArcGIS Pro 3.4 API Reference Guide
ArcGIS.Desktop.Mapping.Events Namespace / BeforeSketchCompletedEventArgs Class / Sketch Property
Example Version

Sketch Property (BeforeSketchCompletedEventArgs)
Gets the current sketch geometry.
Syntax
public Geometry Sketch {get;}
Remarks
If there are multiple listeners to the BeforeSketchCompletedEvent, each gets the latest modified sketch geometry from the previous.
Example
Listen to the before sketch completed event and modify the sketch
// BeforeSketchCompleted event is fired by 
//  - COTS construction tools (except annotation, dimension geometry types), 
//  - Edit Vertices, Reshape, Align Features
//  - 3rd party tools with FireSketchEvents = true


//Subscribe to the before sketch completed event
//ArcGIS.Desktop.Mapping.Events.BeforeSketchCompletedEvent.Subscribe(OnBeforeSketchCompleted);

private Task OnBeforeSketchCompleted(BeforeSketchCompletedEventArgs args)
{
  //assign sketch Z values from default surface and set the sketch geometry
  var modifiedSketch = args.MapView.Map.GetZsFromSurfaceAsync(args.Sketch).Result;
  args.SetSketchGeometry(modifiedSketch.Geometry);
  return Task.CompletedTask;
}
Requirements

Target Platforms: Windows 11, Windows 10

ArcGIS Pro version: 3 or higher.
See Also