InstanceOf (geometry)

InstanceOf (geometry)#

A method that tests if the geometry instance is the same as the specified type. Returns 1 if the type of a geometry instance is the same as the specified type. This method also returns 1 if the specified type is an ancestor of the instance type. Otherwise, this method returns 0.


.InstanceOf ( geometry_type )



nvarchar(4000) string specifying one of 15 types exposed in the geometry type hierarchy.

Return type#



The input for the method must be one of the following types: Geometry, Point, Curve, LineString, CircularString, CompoundCurve, Surface, Polygon, CurvePolygon, GeometryCollection, MultiSurface, MultiPolygon, MultiCurve, MultiLineString, and MultiPoint. This method throws an ArgumentException if any other strings are used for the input.


Create a MultiPoint instance and use InstanceOf() to see if the instance is a GeometryCollection.

DECLARE @g geometry;
SET @g = geometry::STGeomFromText('MULTIPOINT(0 0, 13.5 2, 7 19)', 0);

See Also#