CreatePolygon(IEnumerable<MapPoint>,SpatialReference) Method

Convenience method to create a new instance of the Polygon class.

Syntax

C#
Visual Basic (Declaration)

public static Polygon CreatePolygon( 
   IEnumerable<MapPoint> points,
   SpatialReference spatialReference
)

Public Overloads Shared Function CreatePolygon( _
   ByVal points As IEnumerable(Of MapPoint), _
   Optional ByVal spatialReference As SpatialReference _
) As Polygon

Parameters

points: Points to create the polygon.
spatialReference: (Optional) The SpatialReference. The default value is null. If spatialReference is null, then the spatial reference will be inherited from points.

Return Value

A Polygon.

Exceptions

Exception	Description
System.InvalidOperationException	Incompatible spatial references.
System.ArgumentNullException	points is null.

Example

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

MapPoint pt1 = MapPointBuilder.CreateMapPoint(1.0, 1.0);
MapPoint pt2 = MapPointBuilder.CreateMapPoint(1.0, 2.0);
MapPoint pt3 = MapPointBuilder.CreateMapPoint(2.0, 2.0);
MapPoint pt4 = MapPointBuilder.CreateMapPoint(2.0, 1.0);

List<MapPoint> list = new List<MapPoint>() { pt1, pt2, pt3, pt4 };

// Builder convenience methods don't need to run on the MCT.
Polygon polygon = PolygonBuilder.CreatePolygon(list, SpatialReferences.WGS84);

// Builder constructors need to run on the MCT.
ArcGIS.Desktop.Framework.Threading.Tasks.QueuedTask.Run(() =>
{
  using (PolygonBuilder polygonBuilder = new PolygonBuilder(list))
  {
    polygonBuilder.SpatialReference = SpatialReferences.WGS84;
    polygon = polygonBuilder.ToGeometry();
  }
});

Requirements

Target Platforms: Windows 10, Windows 8.1, Windows 7

Reference

PolygonBuilder Class
PolygonBuilder Members
Overload List