ITopologyGraph.SelectByGeometry Method

Selects nodes and/or edges that intersect the specified geometry; whichElements is a bitwise combination of esriTopologyElement values.

[Visual Basic .NET]
Public Sub SelectByGeometry ( _
    ByVal whichElements As Integer, _
    ByVal selectHow As esriTopologySelectionResultEnum, _
    ByVal Geometry As IGeometry _
)

[C#]
public void SelectByGeometry (
    int whichElements,
    esriTopologySelectionResultEnum selectHow,
    IGeometry Geometry
);

[C++]
HRESULT SelectByGeometry(
  long whichElements,
  esriTopologySelectionResultEnum selectHow,
  IGeometry* Geometry
);

[C++]

Parameters
whichElements 
  whichElements is a parameter of type long
selectHow 

  selectHow is a parameter of type esriTopologySelectionResultEnum
Geometry 

  Geometry is a parameter of type IGeometry

Product Availability

Description

The ITopologyGraph::SelectByGeometry method allow to modify the current set of selected TopologyElement part of the TopologyGraph using an input geometry. The selection behavior is determined by the esriTopologySelectionResultEnum parameter.

Remarks

Only geometry types that implement the IRelationalOperator interface are valid for the pGeometry parameter. This method uses the IRelationalOperator::Disjoint (opposite of intersect) to determine if TopologyElements have to be selected. Therefore this method may select TopologyEdges that are not completely overlapping with the input geometry if the input is of type polygon or polyline. Using a point as the input geometry is a valid way to select only one edge.

whichElements is a bitwise combination of esriTopologyElement values.

If a Topology Element selected programmatically has to be moved using the Topology Edit Tool, the Selection Anchor has to be set to a valid location on the topology element.

See Also