ArcGIS.Desktop.Editing.Events.ActiveTemplateChangedEvent.Subscribe(OnActiveTemplateChanged);
async void OnActiveTemplateChanged(ArcGIS.Desktop.Editing.Events.ActiveTemplateChangedEventArgs args)
{
// return if incoming template is null
if (args.IncomingTemplate == null)
return;
// Activate two-point line tool for Freeway template in the Layers map
if (args.IncomingTemplate.Name == "Freeway" && args.IncomingMapView.Map.Name == "Layers")
await args.IncomingTemplate.ActivateToolAsync("esri_editing_SketchTwoPointLineTool");
}