ArcGIS Pro 2.7 API Reference Guide
CreateLineSegment(Coordinate3D,Coordinate3D,SpatialReference) Method
Example 

ArcGIS.Core.Geometry Namespace > LineBuilder Class > CreateLineSegment Method : CreateLineSegment(Coordinate3D,Coordinate3D,SpatialReference) Method
The start point.
The end point.
(Optional) The SpatialReference. The default value is null.
Convenience method to create a new instance of the LineSegment class.
Syntax
Public Overloads Shared Function CreateLineSegment( _
   ByVal startCoord As Coordinate3D, _
   ByVal endCoord As Coordinate3D, _
   Optional ByVal spatialReference As SpatialReference _
) As LineSegment

Parameters

startCoord
The start point.
endCoord
The end point.
spatialReference
(Optional) The SpatialReference. The default value is null.

Return Value

Remarks
The new instance will build a straight line segment between the start and end point.

Line Segment

Example
// Use a builder convenience method or use a builder constructor.

MapPoint startPt = MapPointBuilder.CreateMapPoint(1.0, 1.0);
MapPoint endPt = MapPointBuilder.CreateMapPoint(2.0, 1.0);

// Builder convenience methods don't need to run on the MCT.
LineSegment lineFromMapPoint = LineBuilder.CreateLineSegment(startPt, endPt);

// coordinate2D
Coordinate2D start2d = (Coordinate2D)startPt;
Coordinate2D end2d = (Coordinate2D)endPt;

LineSegment lineFromCoordinate2D = LineBuilder.CreateLineSegment(start2d, end2d);

// coordinate3D
Coordinate3D start3d = (Coordinate3D)startPt;
Coordinate3D end3d = (Coordinate3D)endPt;

LineSegment lineFromCoordinate3D = LineBuilder.CreateLineSegment(start3d, end3d);

// lineSegment
LineSegment anotherLineFromLineSegment = LineBuilder.CreateLineSegment(lineFromCoordinate3D);

// Builder constructors need to run on the MCT.
ArcGIS.Desktop.Framework.Threading.Tasks.QueuedTask.Run(() =>
{
  using (LineBuilder lb = new LineBuilder(startPt, endPt))
  {
    // do something with the builder

    lineFromMapPoint = lb.ToSegment();
  }

  using (LineBuilder lb = new LineBuilder(start2d, end2d))
  {
    // do something with the builder

    lineFromCoordinate2D = lb.ToSegment();
  }

  using (LineBuilder lb = new LineBuilder(start3d, end3d))
  {
    // do something with the builder

    lineFromCoordinate3D = lb.ToSegment();
  }

  using (LineBuilder lb = new LineBuilder(lineFromCoordinate3D))
  {
    // do something with the builder

    LineSegment lineFromLineSegment = lb.ToSegment();
  }
});
Requirements

Target Platforms: Windows 10, Windows 8.1

See Also

Reference

LineBuilder Class
LineBuilder Members
Overload List