ArcGIS Pro 3.4 API Reference Guide
ArcGIS.Desktop.Mapping Namespace / MapView Class / SelectFeatures Method
The geometry used to select features that intersect it.
Combination method used in selection operation.
This parameter only applies to 3D. Indicates whether only features that visibly intersect the geometry should be selected.
This parameter only applies to 2D. Indicates whether only features that are completely within the geometry should be selected.
Example Version

SelectFeatures Method
Select features that intersect a geometry. This method must be called on the MCT. Use QueuedTask.Run.
Syntax

Parameters

geometry
The geometry used to select features that intersect it.
method
Combination method used in selection operation.
isVisualIntersect
This parameter only applies to 3D. Indicates whether only features that visibly intersect the geometry should be selected.
isWhollyWithin
This parameter only applies to 2D. Indicates whether only features that are completely within the geometry should be selected.

Return Value

The map selection created by the intersection with the geometry.
Exceptions
ExceptionDescription
This method or property must be called within the lambda passed to QueuedTask.Run.
3D views only support selecting features interactively using geometry in screen coordinates relative to the top-left corner of the view.
Example
Change the layer selection color
var featureLayer = MapView.Active.Map.GetLayersAsFlattenedList().OfType<FeatureLayer>().FirstOrDefault();
ArcGIS.Desktop.Framework.Threading.Tasks.QueuedTask.Run(() =>
{
  // get the CIM definition of the layer
  var layerDef = featureLayer.GetDefinition() as ArcGIS.Core.CIM.CIMBasicFeatureLayer;
  // disable the default symbol
  layerDef.UseSelectionSymbol = false;
  // assign a new color
  layerDef.SelectionColor = ColorFactory.Instance.RedRGB;
  // apply the definition to the layer
  featureLayer.SetDefinition(layerDef);

  if (!featureLayer.IsVisible)
    featureLayer.SetVisibility(true);
  //Do a selection

  MapView.Active.SelectFeatures(MapView.Active.Extent);
});
Requirements

Target Platforms: Windows 11, Windows 10

ArcGIS Pro version: 3 or higher.
See Also