Gets the Z (elevation) value of the instance. The semantics of the elevation value are user-defined.
Assembly: Microsoft.SqlServer.Types (in Microsoft.SqlServer.Types.dll)
The value of this property is null if the geography instance is not a point, as well as for any Point instance for which it is not set.
This property is read-only.
Z-coordinates are not used in any calculations made by the library and are not carried through any library calculations.