private bool Unregister()
{
//Original comment - "events have to be unregistered on the same thread they were registered on...hence the use of the Queued Task"
GroundToGridEvent.Unsubscribe(GroundToGridEventMethod);
return(false);
}
private async Task <bool> Register()
{
//Get the active map view.
var mapView = MapView.Active;
if (mapView?.Map == null)
{
return(false);
}
_current_CIMg2g = await mapView.Map.GetGroundToGridCorrection();
if (_current_CIMg2g != null)
{
_copy_CIMg2g = _current_CIMg2g.CreateCopy(); //make a copy of the G2G right before listening for events
}
else
{
_current_CIMg2g = new CIMGroundToGridCorrection();
_copy_CIMg2g = new CIMGroundToGridCorrection();
}
GroundToGridEvent.Subscribe(GroundToGridEventMethod);
return(true);
}
