private bool Unregister()
{
//Careful here - events have to be unregistered on the same
//thread they were registered on...hence the use of the
//Queued Task
QueuedTask.Run(() =>
{
//One kvp per layer....of which there is only one in the sample
//out of the box but you can add others and register for events
foreach (var kvp in _rowevents)
{
RowCreatedEvent.Unsubscribe(kvp.Value[0]);
RowChangedEvent.Unsubscribe(kvp.Value[1]);
RowDeletedEvent.Unsubscribe(kvp.Value[2]);
kvp.Value.Clear();
}
_rowevents.Clear();
//Editing and Edit Completed.
EditCompletingEvent.Unsubscribe(_editevents[0]);
EditCompletedEvent.Unsubscribe(_editevents[1]);
_editevents.Clear();
});
return(false);
}
private bool Register()
{
var layers = MapView.Active.Map.GetLayersAsFlattenedList().OfType <FeatureLayer>();
QueuedTask.Run(() => {
foreach (var fl in layers)
{
var fc = fl.GetFeatureClass();
var tokens = new List <SubscriptionToken>();
//These events are fired once ~per feature~,
//per table
tokens.Add(RowCreatedEvent.Subscribe((rc) => RowEventHandler(rc), fc));
tokens.Add(RowChangedEvent.Subscribe((rc) => RowEventHandler(rc), fc));
tokens.Add(RowDeletedEvent.Subscribe((rc) => RowEventHandler(rc), fc));
_rowevents[fl.Name] = tokens;
}
//This event is fired once per edit execute
//Note: This event won't fire if the edits were cancelled
_editevents.Add(EditCompletingEvent.Subscribe((ec) =>
{
RecordEvent("EditCompletingEvent", "");
//can also cancel edit in the completing event...
//cancels everything (that is cancealable)
//
//you'll need to modify the RowEventHandler() to prevent if
//from doing the cancel or this will never get called
if (_cancelEdit)
{
ec.CancelEdit($"EditCompletingEvent, edit cancelled");
AddEntry("*** edits cancelled");
AddEntry("---------------------------------");
}
}));
//This event is fired after all the edits are completed (and on
//save, discard, undo, redo) and is fired once
_editevents.Add(EditCompletedEvent.Subscribe((ec) => {
HandleEditCompletedEvent(ec);
return(Task.FromResult(0));
}));
});
return(true);
}
