IGeometryCollection

This interface gives access to geometry collections, providing methods for accessing, adding and removing individual geometries of a multi-part geometry (multipoint, multilinestring, multipolygon). For multipoint, the Geometry parts are points. For multilinestrings, the Geometry parts are linestrings. For multipolygons, the Geometry parts are polygons.

	Properties
	Count	The number of geometries in the collection.
	Dimension	Returns the dimension of the collection. (Inherited from IGeometry)
	Envelope	Returns the collection’s bounding box. (Inherited from IGeometry)
	Geometry	Returns the IGeometry element in the specified zero based index. (C# exposes this property as get_Geometry method)
	GeometryType	Returns the collection’s geometry type. (Inherited from IGeometry)
	GeometryTypeStr	Returns a string representation of the collection type. (Inherited from IGeometry)
	Item	Returns the IGeometry element in the specified zero based index.
	NumGeometries	The number of geometries in this collection.
	SpatialOperator	An ISpatialOperator representing the selected collection’s interaction with another geometry object. (Inherited from IGeometry)
	SpatialRelation	An ISpatialRelation that tests the collection’s spatial relationship with other geometries. (Inherited from IGeometry)
	Wks	An IWks representing methods for transferring coordinate system information (WKT and WKB). (Inherited from IGeometry)
	Methods
	AddGeometry	Adds a geometry to the collection.
	Clone	Returns an exact copy of the selected collection. (Inherited from IGeometry)
	DeleteGeometry	Deletes the selected geometry from the collection.
	EndEdit	Terminates the edit item mode. (Inherited from IGeometry)
	get_Geometry	Returns the IGeometry element in the specified zero based index. (This method is exposed only in C#. To use from C++ or JavaScript use the Geometry property)
	IsEmpty	Returns whether or not the selected geometry collection is empty. (Inherited from IGeometry)
	IsSimple	Returns whether or not the geometry collection is simple. (Inherited from IGeometry)
	SetEmpty	Removes all geometries from this collection. (Inherited from IGeometry)
	StartEdit	Starts the edit item mode. (Inherited from IGeometry)