GetDatastore Method (KnowledgeGraphLayer)
Gets the knowledge graph datastore associated with the layer.
This method must be called on the MCT. Use QueuedTask.Run.
Return Value
The knowledge graph datastore associated with the layer. Returns null if the KnowledgeGraph layer is empty.
Getting a Connection from a KnowledgeGraphLayer
var kgLayer = MapView.Active.Map.GetLayersAsFlattenedList()
.OfType<KnowledgeGraphLayer>().FirstOrDefault();
QueuedTask.Run(() =>
{
// use the layer directly
var datastore = kgLayer.GetDatastore();
// or you can use any of the sub items since
//KnowledgeGraphLayer is a composite layer - get the first
// child feature layer or standalone table
var featlayer = kgLayer?.GetLayersAsFlattenedList()?
.OfType<FeatureLayer>()?.FirstOrDefault();
KnowledgeGraph kg = null;
if (featlayer != null)
{
using (var fc = featlayer.GetFeatureClass())
kg = fc.GetDatastore() as KnowledgeGraph;
//TODO use KnowledgeGraph
}
else
{
//try standalone table
var stbl = kgLayer?.GetStandaloneTablesAsFlattenedList()?
.FirstOrDefault();
if (stbl != null)
{
using (var tbl = stbl.GetTable())
kg = tbl.GetDatastore() as KnowledgeGraph;
//TODO use KnowledgeGraph
}
}
});
Target Platforms: Windows 11, Windows 10
ArcGIS Pro version: 3.3 or higher.