ArcObjects Library Reference (EditorExt)  

TraceUpstreamTask CoClass

Trace task used by the Utility Network Analysis extension for finding all reachable elements in the current network that are upstream from the specified flag(s).

Product Availability

Available with ArcGIS Desktop.


The TraceUpstreamTask object returns all of the network elements that are upstream of any 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 TraceUpstreamTask 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