ArcGIS Pro 3.4 API Reference Guide
ArcGIS.Desktop.Mapping Namespace / ITablePane Interface / ActiveObjectID Property
Example Version

ActiveObjectID Property (ITablePane)
Gets the ObjectID of the active row in the table. The value of the row can be null, when the table does not have object ids, the active row is the new row, or the data for the row has not been loaded.
Syntax
Nullable<long> ActiveObjectID {get;}
Example
Retrieve the values of selected cell in the attribute table
if (FrameworkApplication.Panes.ActivePane is ITablePane tablePane)
{
  var mapMember = tablePane.MapMember;
  var oid = tablePane.ActiveObjectID;
  if (oid.HasValue && oid.Value != -1 && mapMember != null)
  {
    var activeField = tablePane.ActiveColumn;
    return QueuedTask.Run<object>(() =>
    {
      // TODO: Use core objects to retrieve record and get value

      return null;
    });
  }
}
Requirements

Target Platforms: Windows 11, Windows 10

ArcGIS Pro version: 3 or higher.
See Also