ArcGIS Pro 2.6 API Reference Guide
PolylineBuilder Class
Members 

ArcGIS.Core.Geometry Namespace : PolylineBuilder Class
Builder for creating a polyline.
Object Model
PolylineBuilder ClassPolylineBuilder ClassPolyline ClassPolyline ClassPolyline ClassPolyline ClassSegmentBuilder ClassSpatialReference ClassPolyline Class
Syntax
Public NotInheritable Class PolylineBuilder 
   Inherits ArcGIS.Core.Geometry.MultipartBuilder(Of Polyline)
   Implements System.IDisposable 
Remarks

Use the PolylineBuilder 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 is 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 PolylineBuilder provides the way to make changes when working with a Polyline. Use the PolylineBuilder.ToGeometry method to get the Polyline geometry from the builder.

A polyline is an ordered collection of paths where each path is a collection of contiguous segments. A Segment has a start and an end point. If a polyline has more than one path, the paths may be separate from one another. The paths of a polyline can be obtained using the Multipart.Parts method.

Inheritance Hierarchy

System.Object
   ArcGIS.Core.CoreObjectsBase
      ArcGIS.Core.Geometry.GeometryBuilder<T>
         ArcGIS.Core.Geometry.MultipartBuilder<T>
            ArcGIS.Core.Geometry.PolylineBuilder

Requirements

Target Platforms: Windows 10, Windows 8.1, Windows 7

See Also

Reference

PolylineBuilder Members
ArcGIS.Core.Geometry Namespace