ArcObjects Library Reference (EditorExt)  

FindAncestorsTask CoClass

Trace task used by the Utility Network Analysis extension for finding all reachable elements in the current network that are upstream from all of the specified flags.

Product Availability

Available with ArcGIS Desktop.


The FindAncestorsTask object returns the network elements that are upstream of all of the flags on the current network.

Supported Platforms



Interfaces Description
ITraceTask Provides access to members that execute a trace task.
ITraceTaskResults Provides access to members that return the network elements returned by the trace task.


The FindAncestorsTask object is a directional trace task. By default, network elements with indeterminate or uninitialized flow direction will not be traced

See Also

FindLoopsTask Class | FindAncestorsTask Class | FindConnectedTask Class | TraceUpstreamTask Class | TraceDownstreamTask Class | TracePathTask Class | UtilityNetworkAnalysisExt Class