ArcObjects Library Reference (NetworkAnalyst)

INATraversalResultQuery.FeatureClass Property

The feature class by element type.

[Visual Basic .NET]
Public Function get_FeatureClass ( _
    ByVal networkElementType As esriNetworkElementType _
) As IFeatureClass

[C#]
public IFeatureClass get_FeatureClass (
    esriNetworkElementType networkElementType
);

[C++]
HRESULT get_FeatureClass(
  esriNetworkElementType networkElementType,
  IFeatureClass** FeatureClass
);

[C++]
Parameters
networkElementType [in]
  networkElementType is a parameter of type esriNetworkElementType
FeatureClass [out, retval]
  FeatureClass is a parameter of type IFeatureClass

Product Availability

Available with ArcGIS Engine, ArcGIS Desktop, and ArcGIS Server. Requires Network Analyst Extension.

Remarks

Use the FeatureClass property to return a feature class holding all of the NATraversalResultElements of a specific type (esriNETJunction, esriNETEdge, esriNETTurn).

This feature class can be accessed like any other feature class in ArcGIS.

[C#]

This C# example shows how you can add a feature class returned by the FeatureClass property on INATraversalResultQuery to a map.

public void AddNATraversalResultToMap(INALayer naLayer, IMap map)
{
  INATraversalResultQuery traversalResultQuery = naLayer.Context.Result;
  INATraversalResultEdit naTraversalResultEdit = traversalResultQuery as INATraversalResultEdit;

  // Infer Geometry
  naTraversalResultEdit.InferGeometry(string.Empty, null, new CancelTrackerClass());

  // Get the Edges and add as a layer
  IFeatureLayer featureLayer = new FeatureLayerClass();
  featureLayer.FeatureClass = traversalResultQuery.get_FeatureClass(esriNetworkElementType.esriNETEdge);
  featureLayer.Name = featureLayer.FeatureClass.AliasName;
  map.AddLayer(featureLayer);

  // Get the Junctions and add as a layer
  featureLayer = new FeatureLayerClass();
  featureLayer.FeatureClass = traversalResultQuery.get_FeatureClass(esriNetworkElementType.esriNETJunction);
  featureLayer.Name = featureLayer.FeatureClass.AliasName;
  map.AddLayer(featureLayer);
}

[Visual Basic .NET]

This VB.NET example shows how you can add a feature class returned by the FeatureClass property on INATraversalResultQuery to a map.

Public Sub AddNATraversalResultToMap(ByVal naLayer As INALayer, ByVal map As IMap)
  Dim traversalResultQuery As INATraversalResultQuery = naLayer.Context.Result
  Dim naTraversalResultEdit As INATraversalResultEdit = traversalResultQuery

  ' Infer Geometry
  naTraversalResultEdit.InferGeometry(String.Empty, Nothing, New CancelTracker())

  ' Get the Edges and add as a layer
  Dim featureLayer As IFeatureLayer = New FeatureLayer()
  featureLayer.FeatureClass = traversalResultQuery.FeatureClass(esriNetworkElementType.esriNETEdge)
  featureLayer.Name = featureLayer.FeatureClass.AliasName
  map.AddLayer(featureLayer)

  ' Get the Junctions and add as a layer
  featureLayer = New FeatureLayer()
  featureLayer.FeatureClass = traversalResultQuery.FeatureClass(esriNetworkElementType.esriNETJunction)
  featureLayer.Name = featureLayer.FeatureClass.AliasName
  map.AddLayer(featureLayer)
End Sub

.NET Samples

Add a traversal result to the map (Code Files: AddTraversalResultsToMap)

INATraversalResultQuery.FeatureClass Property

Product Availability

Remarks

See Also

.NET Samples