SelectFeatures Method

In This Topic

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

Syntax

C#
Visual Basic (Declaration)

public SelectionSet SelectFeatures( 
   Geometry geometry,
   SelectionCombinationMethod method,
   bool isVisualIntersect,
   bool isWhollyWithin
)

Public Function SelectFeatures( _
   ByVal geometry As Geometry, _
   Optional ByVal method As SelectionCombinationMethod, _
   Optional ByVal isVisualIntersect As Boolean, _
   Optional ByVal isWhollyWithin As Boolean _
) As SelectionSet

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

Exception	Description
ArcGIS.Core.CalledOnWrongThreadException	This method or property must be called within the lambda passed to QueuedTask.Run.
System.ArgumentException	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, Windows 8.1

Reference

MapView Class
MapView Members

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