ArcGIS Pro 3.4 API Reference Guide
ArcGIS.Core.CIM Namespace / CIMMap Class / HVDatumTransforms Property
Example Version

HVDatumTransforms Property
Gets or sets the set of geographic transformations used by the map for spatial references with vertical coordinate system.
Syntax
public CompositeHVDatumTransformation[] HVDatumTransforms {get; set;}
Remarks
An object with an empty Transformations list indicates the "Do not transform" case, where a pair of coordinate systems is deliberately configured so that no coordinate transformation occurs during projection.
Example
Datum
var cimMapDefinition = MapView.Active.Map.GetDefinition();
// use if map's sr does not have a vertical coordinate system
var datumTransformations = cimMapDefinition.DatumTransforms;
// use if map's sr has a vertical coordinate system
var hvDatumTransformations = cimMapDefinition.HVDatumTransforms;
Requirements

Target Platforms: Windows 11, Windows 10

ArcGIS Pro version: 3 or higher.
See Also