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

ToJson Method (SpatialReference)
Converts this spatial reference instance into an ArcGIS JSON spatial reference representation.
Syntax
public string ToJson()

Return Value

Spatial reference represented as a JSON string.
Example
Import and Export Spatial Reference
SpatialReference srWithVertical = SpatialReferenceBuilder.CreateSpatialReference(4326, 6916);

string xml = srWithVertical.ToXml();
SpatialReference importedSR = SpatialReferenceBuilder.FromXml(xml);
// importedSR.Wkid = 4326
// importedSR.VcsWkid = 6916

string json = srWithVertical.ToJson();
importedSR = SpatialReferenceBuilder.FromJson(json);
// importedSR.Wkid = 4326
// importedSR.VcsWkid = 6916
Requirements

Target Platforms: Windows 11, Windows 10

ArcGIS Pro version: 3 or higher.
See Also