ITopologyProperties Interface

Provides access to members that return properties of a topology.

Members

	Name	Description
	Classes	An enumerator over the FeatureClasses.
	ClusterTolerance	The cluster tolerance of the topology.
	SpatialReference	The spatial reference for the dataset.

ITopologyProperties.Classes Property

An enumerator over the FeatureClasses.

Public ReadOnly Property Classes As IEnumFeatureClass

public IEnumFeatureClass Classes {get;}

Remarks

The Classes property will return an enumeration of the feature classes that participate in the Topology. Calling this method is analogous to using the IFeatureClassContainer::Classes property.

ITopologyProperties.ClusterTolerance Property

The cluster tolerance of the topology.

Public ReadOnly Property ClusterTolerance As Double

public double ClusterTolerance {get;}

Remarks

The ClusterTolerance property will return the cluster tolerance of the Topology. It will be the same value as is returned from the ITopology::ClusterTolerance property.

ITopologyProperties.SpatialReference Property

The spatial reference for the dataset.

Public ReadOnly Property SpatialReference As ISpatialReference

public ISpatialReference SpatialReference {get;}

Remarks

The SpatialReference property will return the spatial reference of the topology.

Classes that implement ITopologyProperties

Classes	Description

Remarks

The ITopologyProperties interface provides access to additional topology properties not supplied through the ITopology interface, such as the enumeration of feature classes and the topology's spatial reference.

void FetchTopologyProperties(ITopology topology)

{

  // Topology properties

  ITopologyProperties topologyProperties = topology as ITopologyProperties;

  // Classes

  IEnumFeatureClass enumFeatureClass = topologyProperties.Classes;

  enumFeatureClass.Reset();

  IFeatureClass featureClass = enumFeatureClass.Next();



  // Cluster tolerance

  double clusterTolerance = topologyProperties.ClusterTolerance;



  // Spatial reference

  ISpatialReference spatialReference = topologyProperties.SpatialReference;

}