ITopologyContainer2 Interface

Provides access to members that create, add, and hand out topologies.

Product Availability

When To Use

The ITopologyContainer2 interface should be used to create topologies that will contain at least one feature class that is Z aware.  The ITopologyContainer2::CreateTopologyEx method allows the specification of a Z cluster tolerance, which indicates which Z clustering model will be used; Building or Terrain.

Members

	Name	Description
	CreateTopology	Creates a new topology.
	CreateTopologyEx	Creates a new topology.
	DefaultClusterTolerance	The default cluster tolerance as per the topology engine.
	DefaultZClusterTolerance	The default z cluster tolerance as per the topology engine.
	MaximumClusterTolerance	The maximal cluster tolerance as per the topology engine.
	MaximumZClusterTolerance	The maximal z cluster tolerance as per the topology engine.
	MinimumClusterTolerance	The minimal cluster tolerance as per the topology engine.
	MinimumZClusterTolerance	The minimal z cluster tolerance as per the topology engine.
	Topology	The topology at the specified index.
	TopologyByID	The topology with the specified ID.
	TopologyByName	The topology with the specified name.
	TopologyCount	The number of topologies in the container.

Inherited Interfaces

CoClasses that implement ITopologyContainer2

Remarks

The ITopologyContainer2 interface can be used to manage and create topologies within a feature dataset.  If your intention is to simply browse for the set of topologies in a feature dataset, it is not necessary to open the feature dataset and call the methods on ITopologyContainer.  The IFeatureDatasetName2::TopologyNames method can be used to efficiently obtain this information.  Careful consideration should be given to specifying the parameters when creating a topology.  Once the topology is built, none of the parameters can be modified.  In order to change properties such as the Z cluster tolerance, the topology must be deleted and rebuilt with the new parameters.

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