ArcGIS Pro 3.0 API Reference Guide
ArcGIS.Core.Geometry Namespace / GeometryEngine Class / ExportToWKB Method / ExportToWKB(WkbExportFlags,Geometry) Method
A combination of WkbExportFlags which determines how the geometry is exported.
The geometry to write to the buffer.

In This Topic
    ExportToWKB(WkbExportFlags,Geometry) Method
    In This Topic
    Writes an OGC well-known binary formatted version of the input geometry to a buffer.
    Public Overloads Function ExportToWKB( _
       ByVal exportFlags As WkbExportFlags, _
       ByVal geometry As Geometry _
    ) As Byte()


    A combination of WkbExportFlags which determines how the geometry is exported.
    The geometry to write to the buffer.

    Return Value

    An OGC well-known binary formatted buffer.
    Geometry is null or empty.
    The method is not implemented for GeometryBag or Multipatch.
    The method is not implemented for geometry with curves.
    Does not support curves. Also, note that if the geometry contains ID information, this property will not be preserved in the export operation. The WKB OGC standard does not contain the ID property.
    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;

    Target Platforms: Windows 11, Windows 10, Windows 8.1

    See Also