ArcGIS Pro 3.4 API Reference Guide
ArcGIS.Core.Data.Topology Namespace / TopologyRule Class / OriginSubtype Property
Example Version

OriginSubtype Property
Gets the ArcGIS.Core.Data.Subtype in the origin feature class to which this topology rule is assigned. If it is not applicable, null is returned.
Syntax
public Subtype OriginSubtype {get;}
Example
GetTopologyRules
using (TopologyDefinition topologyDefinition = topology.GetDefinition())
{
  IReadOnlyList<TopologyRule> rules = topologyDefinition.GetRules();

  Console.WriteLine($"There are {rules.Count} topology rules defined for the topology:");
  Console.WriteLine("ID \t Origin Class \t Origin Subtype \t Destination Class \t Destination Subtype \t Rule Type");

  foreach (TopologyRule rule in rules)
  {
    Console.Write($"{rule.ID}");

    Console.Write(!String.IsNullOrEmpty(rule.OriginClass) ? $"\t{rule.OriginClass}" : "\t\"\"");

    Console.Write(rule.OriginSubtype != null ? $"\t{rule.OriginSubtype.GetName()}" : "\t\"\"");

    Console.Write(!String.IsNullOrEmpty(rule.DestinationClass) ? $"\t{rule.DestinationClass}" : "\t\"\"");

    Console.Write(rule.DestinationSubtype != null ? $"\t{rule.DestinationSubtype.GetName()}" : "\t\"\"");

    Console.Write($"\t{rule.RuleType}");

    Console.WriteLine();
  }
}
Requirements

Target Platforms: Windows 11, Windows 10

ArcGIS Pro version: 3 or higher.
See Also