NSManagedObjectContext.Notifications.ObserveObjectsDidChange Method
Definition
Important
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Overloads
| Name | Description |
|---|---|
| ObserveObjectsDidChange(EventHandler<NSManagedObjectChangeEventArgs>) |
Strongly typed notification for the ObjectsDidChangeNotification constant. |
| ObserveObjectsDidChange(NSObject, EventHandler<NSManagedObjectChangeEventArgs>) |
Strongly typed notification for the ObjectsDidChangeNotification constant. |
ObserveObjectsDidChange(EventHandler<NSManagedObjectChangeEventArgs>)
Strongly typed notification for the ObjectsDidChangeNotification constant.
public static Foundation.NSObject ObserveObjectsDidChange(EventHandler<CoreData.NSManagedObjectChangeEventArgs> handler);static member ObserveObjectsDidChange : EventHandler<CoreData.NSManagedObjectChangeEventArgs> -> Foundation.NSObjectParameters
The handler that responds to the notification when it occurs.
Returns
Token object that can be used to stop receiving notifications by either disposing it or passing it to RemoveObservers(IEnumerable<NSObject>).
Remarks
This method can be used to subscribe to ObjectsDidChangeNotification notifications.
// Listen to all notifications posted for any object
var token = NSManagedObjectContext.Notifications.ObserveObjectsDidChange ((notification) => {
Console.WriteLine ("Observed ObjectsDidChangeNotification!");
};
// Stop listening for notifications
token.Dispose ();
Applies to
ObserveObjectsDidChange(NSObject, EventHandler<NSManagedObjectChangeEventArgs>)
Strongly typed notification for the ObjectsDidChangeNotification constant.
public static Foundation.NSObject ObserveObjectsDidChange(Foundation.NSObject objectToObserve, EventHandler<CoreData.NSManagedObjectChangeEventArgs> handler);static member ObserveObjectsDidChange : Foundation.NSObject * EventHandler<CoreData.NSManagedObjectChangeEventArgs> -> Foundation.NSObjectParameters
- objectToObserve
- NSObject
The specific object to observe.
The handler that responds to the notification when it occurs.
Returns
Token object that can be used to stop receiving notifications by either disposing it or passing it to RemoveObservers(IEnumerable<NSObject>).
Remarks
This method can be used to subscribe to ObjectsDidChangeNotification notifications.
// Listen to all notifications posted for a single object
var token = NSManagedObjectContext.Notifications.ObserveObjectsDidChange (objectToObserve, (notification) => {
Console.WriteLine ($"Observed ObjectsDidChangeNotification for {nameof (objectToObserve)}!");
};
// Stop listening for notifications
token.Dispose ();