Method Equals

Equals(Geometry, Geometry)

Tests if two geometries are equal (have equivalent spatial reference systems, same geometry type, and same points).

Declaration

public static bool Equals(Geometry geometry1, Geometry geometry2)

Parameters

Type	Name	Description
Geometry	geometry1	The first geometry.
Geometry	geometry2	The second geometry.

Returns

Type	Description
System.Boolean	true if geometry1 is equal to geometry2; otherwise, false.

Remarks

This method is one of several that determines the spatial relationship between two geometries. If the spatial relationship exists between the two input geometries then true is returned. If the spatial relationship does not exist between the two input geometries then false is returned. The spatial relationship test used by this method is based on the Dimensionally Extended 9 Intersection Model (DE-9IM) developed by Clementini, et al., and is discussed further in the web pages: DE-9IM and Understanding spatial relations.

The following is a visual example of when this method returns true:

Various implementations of IsEqual(Geometry) method (i.e. IsEqual(Geometry), IsEqual(Geometry), IsEqual(Segment), IsEqual(Geometry), IsEqual(Geometry), IsEqual(Geometry), IsEqual(Segment)) provide the strictest comparison of two geometries to ensure that they are identical. For a slightly more relaxed comparison (one that does not take coordinate order into account), use Equals(Geometry, Geometry). The following table provides a comparison of these options:

geometryA.IsEqual(geometryB)	GeometryEngine.Equals(geometryA,geometryB)
Type	Type
Shape	Shape
Orientation	Orientation
Order of Coordinates	--

Supports true curves.

See Also

IsEqual(Geometry)

Equals(Geometry, System.Double)

Applies to

Platforms and versions

Target	Versions
.NET Standard 2.0	100.3 - 200.5
.NET	100.13 - 200.5
.NET Windows	100.13 - 200.5
.NET Android	200.0 - 200.5
.NET iOS	200.0 - 200.5
.NET Framework	100.0 - 200.5
Xamarin.Android	100.0 - 100.15
Xamarin.iOS	100.0 - 100.15
UWP	100.0 - 200.5