UIFocusUpdateContext.Notifications.ObserveDidUpdate Method
Definition
Important
Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.
Overloads
| Name | Description |
|---|---|
| ObserveDidUpdate(EventHandler<NSNotificationEventArgs>) |
Strongly typed notification for the DidUpdateNotification constant. |
| ObserveDidUpdate(NSObject, EventHandler<NSNotificationEventArgs>) |
Strongly typed notification for the DidUpdateNotification constant. |
ObserveDidUpdate(EventHandler<NSNotificationEventArgs>)
Strongly typed notification for the DidUpdateNotification constant.
public static Foundation.NSObject ObserveDidUpdate(EventHandler<Foundation.NSNotificationEventArgs> handler);static member ObserveDidUpdate : EventHandler<Foundation.NSNotificationEventArgs> -> Foundation.NSObjectParameters
- handler
- EventHandler<NSNotificationEventArgs>
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 DidUpdateNotification notifications.
// Listen to all notifications posted for any object
var token = UIFocusUpdateContext.Notifications.ObserveDidUpdate ((notification) => {
Console.WriteLine ("Observed DidUpdateNotification!");
};
// Stop listening for notifications
token.Dispose ();
Applies to
ObserveDidUpdate(NSObject, EventHandler<NSNotificationEventArgs>)
Strongly typed notification for the DidUpdateNotification constant.
public static Foundation.NSObject ObserveDidUpdate(Foundation.NSObject objectToObserve, EventHandler<Foundation.NSNotificationEventArgs> handler);static member ObserveDidUpdate : Foundation.NSObject * EventHandler<Foundation.NSNotificationEventArgs> -> Foundation.NSObjectParameters
- objectToObserve
- NSObject
The specific object to observe.
- handler
- EventHandler<NSNotificationEventArgs>
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 DidUpdateNotification notifications.
// Listen to all notifications posted for a single object
var token = UIFocusUpdateContext.Notifications.ObserveDidUpdate (objectToObserve, (notification) => {
Console.WriteLine ($"Observed DidUpdateNotification for {nameof (objectToObserve)}!");
};
// Stop listening for notifications
token.Dispose ();