ArcGIS Pro 2.6 API Reference Guide
ToEsriShape Method (Envelope)

ArcGIS.Core.Geometry Namespace > Envelope Class : ToEsriShape Method
Overload List
OverloadDescription
Converts this envelope into an Esri shape formatted binary byte buffer. Note that the returned buffer will represent a polygon as there is not an Esri shape buffer for envelope geometry type.  
Not implemented. Returns 0.  
Requirements

Target Platforms: Windows 10, Windows 8.1, Windows 7

See Also

Reference

Envelope Class
Envelope Members