OpenTopologyAndProcessDefinition
public void OpenTopologyAndProcessDefinition()
{
// Open a geodatabase topology from a file geodatabase and process the topology definition.
using (Geodatabase geodatabase = new Geodatabase(new FileGeodatabaseConnectionPath(new Uri(@"C:\TestData\GrandTeton.gdb"))))
using (Topology topology = geodatabase.OpenDataset<Topology>("Backcountry_Topology"))
{
ProcessDefinition(geodatabase, topology);
}
// Open a feature service topology and process the topology definition.
const string TOPOLOGY_LAYER_ID = "0";
using (Geodatabase geodatabase = new Geodatabase(new ServiceConnectionProperties(new Uri("https://sdkexamples.esri.com/server/rest/services/GrandTeton/FeatureServer"))))
using (Topology topology = geodatabase.OpenDataset<Topology>(TOPOLOGY_LAYER_ID))
{
ProcessDefinition(geodatabase, topology);
}
}
private void ProcessDefinition(Geodatabase geodatabase, Topology topology)
{
// Similar to the rest of the Definition objects in the Core.Data API, there are two ways to open a dataset's
// definition -- via the Topology dataset itself or via the Geodatabase.
using (TopologyDefinition definitionViaTopology = topology.GetDefinition())
{
OutputDefinition(geodatabase, definitionViaTopology);
}
using (TopologyDefinition definitionViaGeodatabase =
geodatabase.GetDefinition<TopologyDefinition>("Backcountry_Topology"))
{
OutputDefinition(geodatabase, definitionViaGeodatabase);
}
}
private void OutputDefinition(Geodatabase geodatabase, TopologyDefinition topologyDefinition)
{
Console.WriteLine($"Topology cluster tolerance => {topologyDefinition.GetClusterTolerance()}");
Console.WriteLine($"Topology Z cluster tolerance => {topologyDefinition.GetZClusterTolerance()}");
IReadOnlyList<string> featureClassNames = topologyDefinition.GetFeatureClassNames();
Console.WriteLine($"There are {featureClassNames.Count} feature classes that are participating in the topology:");
foreach (string name in featureClassNames)
{
// Open each feature class that participates in the topology.
using (FeatureClass featureClass = geodatabase.OpenDataset<FeatureClass>(name))
using (FeatureClassDefinition featureClassDefinition = featureClass.GetDefinition())
{
Console.WriteLine($"\t{featureClass.GetName()} ({featureClassDefinition.GetShapeType()})");
}
}
}
Target Platforms: Windows 11, Windows 10
ArcGIS Pro version: 3 or higher.