ArcGIS Pro 3.4 API Reference Guide
ArcGIS.Core.Geometry Namespace / CoordinateSystemListEntry Class / Category Property
Example Version

Category Property (CoordinateSystemListEntry)
Gets the category of the coordinate system. The category is a string separated by forward slashes. When there is more than one category (or region), the ordering is hierarchical. In other words, the categories in the list are ordered by area from largest to smallest.
Syntax
public string Category {get;}
Example
Retrieve coordinate systems
// get all the geographic coordinate systems
IReadOnlyList<CoordinateSystemListEntry> gcs_list = GeometryEngine.Instance.GetPredefinedCoordinateSystemList(CoordinateSystemFilter.GeographicCoordinateSystem);

// get the projected coordinate systems
IReadOnlyList<CoordinateSystemListEntry> proj_list = GeometryEngine.Instance.GetPredefinedCoordinateSystemList(CoordinateSystemFilter.ProjectedCoordinateSystem);

// get the vertical coordinate systems
IReadOnlyList<CoordinateSystemListEntry> vert_list = GeometryEngine.Instance.GetPredefinedCoordinateSystemList(CoordinateSystemFilter.VerticalCoordinateSystem);

// get geographic and projected coordinate systems
IReadOnlyList<CoordinateSystemListEntry> combined_list = GeometryEngine.Instance.GetPredefinedCoordinateSystemList(CoordinateSystemFilter.GeographicCoordinateSystem | CoordinateSystemFilter.ProjectedCoordinateSystem);

// investigate one of the entries
CoordinateSystemListEntry entry = gcs_list[0];
int wkid = entry.Wkid;
string category = entry.Category;
string name = entry.Name;
Requirements

Target Platforms: Windows 11, Windows 10

ArcGIS Pro version: 3 or higher.
See Also