topic Re: Get the tables joined to a feature layer in ArcGIS Pro SDK Questions

Get the tables joined to a feature layer

JFr87 — Wed, 02 Jul 2025 06:39:21 GMT

Hi,

is there a way to determine which tables are joined to a feature layer using the ArcGIS Pro SDK for .NET?

For example, I have a Feature Layer "Trees" joined to a Table "Trees_Metadata". I performed the join using the "Joins and Relates" => "Add Join..." function. How can I use the ArcGIS Pro SDK for .NET to find out retrospectively which table the "Trees" layer is joined to?

Thanks in advance

Re: Get the tables joined to a feature layer

JFr87 — Wed, 02 Jul 2025 07:11:34 GMT

I've already tried to determine the joined table using FeatureClass.GetJoin(). I get the following exception:

System.InvalidOperationException: "'Trees' is not a joined table." 'Baumgruppen' is not a joined table. at ArcGIS.Core.Data.Table.GetJoin()

FeatureClass.IsJoinedTable() also returns false, even though I created a join as mentioned above.

Re: Get the tables joined to a feature layer

GKmieliauskas — Wed, 02 Jul 2025 10:59:31 GMT

Hi,

You need to start from FeatureLayer or StandaloneTable to get origin or joined table.

protected override async void OnClick() { var map = MapView.Active.Map; if (map == null || map.Layers.Count == 0) { MessageBox.Show("No layers found in the map."); return; } var bfl = map.GetLayersAsFlattenedList().OfType<FeatureLayer>().FirstOrDefault(layer => layer.Name.Equals("your layer name")); if(bfl.HasJoins) { await QueuedTask.Run(() => { var table1 = bfl.GetTable().GetJoin().GetOriginTable(); var table2 = bfl.GetTable().GetJoin().GetJoinedTable(); // your code here }); } }

Re: Get the tables joined to a feature layer

JFr87 — Thu, 03 Jul 2025 14:49:42 GMT

This example helped me a lot. Thanks.