SetRootNodes Method—ArcGIS Pro

SetRootNodes Method

In This Topic

Sets the root nodes for the link chart map view. Use an empty set of rootNodes to clear the existing set of root nodes. This method must be called on the MCT. Use QueuedTask.Run.

Syntax

C#
Visual Basic (Declaration)

public static void SetRootNodes( 
   MapView mapView,
   MapMemberIDSet rootNodes
)

Public Shared Sub SetRootNodes( _
   ByVal mapView As MapView, _
   ByVal rootNodes As MapMemberIDSet _
)

Parameters

mapView
rootNodes: The set of root nodes. If the set is empty, then the root nodes are cleared.

Exceptions

Exception	Description
System.ArgumentNullException	Map cannot be null.
System.ArgumentNullException	rootNodes cannot be null.
System.ArgumentException	Map is not a link chart.
ArcGIS.Core.CalledOnWrongThreadException	This method or property must be called within the lambda passed to QueuedTask.Run.

Example

Assign a set of records as Root Nodes

await QueuedTask.Run(() =>
{
  var dict = new Dictionary<MapMember, List<long>>();
  dict.Add(entityLayer, oids);
  MapMemberIDSet mmIDSet = MapMemberIDSet.FromDictionary(dict);

  MapView.Active.SetRootNodes(mmIDSet);
});

Assign a selection as Root Nodes

await QueuedTask.Run(() =>
{
  var mapSel = MapView.Active.Map.GetSelection();

  MapView.Active.SetRootNodes(mapSel);
});

Requirements

Target Platforms: Windows 11, Windows 10

ArcGIS Pro version: 3.4 or higher.

Reference

KnowledgeGraphMappingExtensions Class
KnowledgeGraphMappingExtensions Members

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