GetWKBSize Method (IGeometryEngine)

In This Topic

Returns the size of the buffer in bytes that will be required to hold the OGC well-known binary version of the input geometry.

Syntax

C#
Visual Basic (Declaration)

int GetWKBSize( 
   WkbExportFlags exportFlags,
   Geometry geometry
)

Function GetWKBSize( _
   ByVal exportFlags As WkbExportFlags, _
   ByVal geometry As Geometry _
) As Integer

Parameters

exportFlags: A combination of WkbExportFlags which determines how the geometry is exported.
geometry: The geometry to export.

Return Value

The size of the buffer.

Exceptions

Exception	Description
System.ArgumentNullException	Geometry is null or empty.
System.NotImplementedException	The method is not implemented for GeometryBag or Multipatch.
System.NotImplementedException	The method is not implemented for geometry with curves.

Remarks

Does not support curves.

Example

Import and Export Geometries to well-known Binary

// create a polyline
List<Coordinate2D> coords = new List<Coordinate2D>
{
  new Coordinate2D(0, 0),
  new Coordinate2D(0, 1),
  new Coordinate2D(1, 1),
  new Coordinate2D(1, 0)
};

Polyline polyline = PolylineBuilderEx.CreatePolyline(
            coords, SpatialReferences.WGS84);

WkbExportFlags wkbExportFlags = WkbExportFlags.WkbExportDefaults;
WkbImportFlags wkbImportFlags = WkbImportFlags.WkbImportDefaults;

// export and import
byte[] buffer = GeometryEngine.Instance.ExportToWKB(wkbExportFlags, polyline);
Geometry geometry = GeometryEngine.Instance.ImportFromWKB(
               wkbImportFlags, buffer, SpatialReferences.WGS84);
Polyline importPolyline = geometry as Polyline;


// alternatively, determine the size for the buffer
int bufferSize = GeometryEngine.Instance.GetWKBSize(wkbExportFlags, polyline);
buffer = new byte[bufferSize];
// export
bufferSize = GeometryEngine.Instance.ExportToWKB(
                wkbExportFlags, polyline, ref buffer);
// import
importPolyline = GeometryEngine.Instance.ImportFromWKB(
         wkbImportFlags, buffer, SpatialReferences.WGS84) as Polyline;

Requirements

Target Platforms: Windows 11, Windows 10

ArcGIS Pro version: 3 or higher.

Reference

IGeometryEngine Interface
IGeometryEngine Members

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