ArcGIS Pro 2.9 API Reference Guide
PolylineBuilderEx Class
Members 

ArcGIS.Core.Geometry Namespace : PolylineBuilderEx Class
A pure .NET builder for creating a polyline.
Object Model
PolylineBuilderEx ClassPolylineBuilderEx ClassPolyline ClassPolyline ClassSegment ClassSpatialReference ClassGeometry Class
Syntax
public sealed class PolylineBuilderEx : MultipartBuilderEx 
Public NotInheritable Class PolylineBuilderEx 
   Inherits MultipartBuilderEx
Remarks

Use the PolylineBuilderEx class to to create and/or modify a Polyline shape. The builder is best suited for editing workflows where the user may be adding, inserting or removing parts of a Polyline geometry interactively. A Polyline are based upon the parent Geometry class. The Geometry class is immutable which means that you can not change its shape once it is created. Hence, the PolylineBuilderEx provides the way to make changes when working with a Polyline. Use the PolylineBuilder.ToGeometry method to get the Polyline geometry from the builder.

The PolylineBuilderEx methods can be called on any thread. Multipart Polyline
Inheritance Hierarchy

System.Object
   ArcGIS.Core.Geometry.GeometryBuilderEx
      ArcGIS.Core.Geometry.MultipartBuilderEx
         ArcGIS.Core.Geometry.PolylineBuilderEx

Requirements

Target Platforms: Windows 11, Windows 10, Windows 8.1

See Also

Reference

PolylineBuilderEx Members
ArcGIS.Core.Geometry Namespace