ArcGIS Pro 3.4 API Reference Guide
ArcGIS.Core.Geometry Namespace / CompositeHVDatumTransformation Class / ToJson Method
Example Version

ToJson Method (CompositeHVDatumTransformation)
Returns the JSON representation of this transformation.
Syntax
public override string ToJson()

Return Value

JSON string
Example
Create Composite HV Datum Transformation
HVDatumTransformation hv1 = HVDatumTransformation.Create(108034);
HVDatumTransformation hv2 = HVDatumTransformation.Create(108033, false);
List<HVDatumTransformation> hvs = new List<HVDatumTransformation>() { hv1, hv2 };

// create from enumeration
CompositeHVDatumTransformation compositehv = 
                CompositeHVDatumTransformation.Create(hvs);
int count = compositehv.Count;      // count = 2

List<HVDatumTransformation> transforms = 
               compositehv.Transformations as List<HVDatumTransformation>;
HVDatumTransformation tranform = transforms[0];
// transform.Wkid = 108034

// get inverse
CompositeHVDatumTransformation inverse_compositehv = 
       compositehv.GetInverse() as CompositeHVDatumTransformation;

// create from xml
string xml = compositehv.ToXml();
//At 2.x - CompositeHVDatumTransformation xml_compositehv =
//      CompositeHVDatumTransformation.CreateFromXML(xml);

var xml_compositehv = CompositeHVDatumTransformation.CreateFromXml(xml);

// create from json
string json = compositehv.ToJson();
CompositeHVDatumTransformation json_compositehv = 
    DatumTransformation.CreateFromJson(json) as CompositeHVDatumTransformation;
Requirements

Target Platforms: Windows 11, Windows 10

ArcGIS Pro version: 3 or higher.
See Also