ArcGIS Pro 2.7 API Reference Guide
Wkid Property (GeographicTransformation)
Example 

ArcGIS.Core.Geometry Namespace > GeographicTransformation Class : Wkid Property
Gets the well-known ID of the geographic transformation.
Syntax
public int Wkid {get;}
Public ReadOnly Property Wkid As Integer
Example
// create from wkid
GeographicTransformation gt1478 = ArcGIS.Core.Geometry.GeographicTransformation.Create(1478);
string name = gt1478.Name;
string wkt = gt1478.Wkt;
int wkid = gt1478.Wkid;

// create from wkt
GeographicTransformation another_gt1478 = ArcGIS.Core.Geometry.GeographicTransformation.Create(wkt);

// inverse
GeographicTransformation inverse_gt148 = another_gt1478.GetInverse() as GeographicTransformation;
bool isForward = inverse_gt148.IsForward;
Requirements

Target Platforms: Windows 10, Windows 8.1

See Also

Reference

GeographicTransformation Class
GeographicTransformation Members