QueryDiagramEdgeElement Property
Get Diagram Elements
public void GetDiagramElements(MapView mapView, NetworkDiagram networkDiagram)
{
// Create a DiagramElementQueryByExtent to retrieve diagram element junctions whose extent
// intersects the active map extent
DiagramElementQueryByExtent elementQuery = new DiagramElementQueryByExtent();
elementQuery.ExtentOfInterest = MapView.Active.Extent;
elementQuery.AddContents = false;
elementQuery.QueryDiagramJunctionElement = true;
elementQuery.QueryDiagramEdgeElement = false;
elementQuery.QueryDiagramContainerElement = false;
// Use this DiagramElementQueryByExtent as an argument to the QueryDiagramElements method
DiagramElementQueryResult result = networkDiagram.QueryDiagramElements(elementQuery);
// get the container, junction, edge elements
// in this case result.DiagramJunctionElements and result.DiagramEdgeElements will be empty
// since elementQuery.QueryDiagramEdgeElement and elementQuery.QueryDiagramContainerElement are set to false
IReadOnlyList<DiagramContainerElement> containerElements = result.DiagramContainerElements;
IReadOnlyList<DiagramJunctionElement> junctionElements = result.DiagramJunctionElements;
IReadOnlyList<DiagramEdgeElement> edgeElements = result.DiagramEdgeElements;
}
Change the Layout of a Network Diagram
public void DiagramElementQueryResultAndNetworkDiagramSubsetClasses(Geodatabase geodatabase, DiagramManager diagramManager, string diagramName)
{
// Retrieve a diagram
using (NetworkDiagram diagramTest = diagramManager.GetNetworkDiagram(diagramName))
{
// Create a DiagramElementQueryByElementTypes query object to get the diagram elements we want to work with
DiagramElementQueryByElementTypes query = new DiagramElementQueryByElementTypes();
query.QueryDiagramJunctionElement = true;
query.QueryDiagramEdgeElement = true;
query.QueryDiagramContainerElement = true;
// Retrieve those diagram elements
DiagramElementQueryResult elements = diagramTest.QueryDiagramElements(query);
// Create a NetworkDiagramSubset object to edit this set of diagram elements
NetworkDiagramSubset subset = new NetworkDiagramSubset();
subset.DiagramJunctionElements = elements.DiagramJunctionElements;
subset.DiagramEdgeElements = elements.DiagramEdgeElements;
subset.DiagramContainerElements = elements.DiagramContainerElements;
// Edit the shapes of the diagram elements - left as an exercise for the student
TranslateDiagramElements(subset);
// Save the new layout of the diagram elements
diagramTest.SaveLayout(subset, true);
}
}
Target Platforms: Windows 11, Windows 10
ArcGIS Pro version: 3 or higher.