UIPasteboard.Notifications.ObserveChanged UIPasteboard.Notifications.ObserveChanged Method

Definition

Overloads

ObserveChanged(EventHandler<UIPasteboardChangeEventArgs>) ObserveChanged(EventHandler<UIPasteboardChangeEventArgs>)

Strongly typed notification for the ChangedNotification constant.

ObserveChanged(NSObject, EventHandler<UIPasteboardChangeEventArgs>) ObserveChanged(NSObject, EventHandler<UIPasteboardChangeEventArgs>)

Strongly typed notification for the ChangedNotification constant.

ObserveChanged(EventHandler<UIPasteboardChangeEventArgs>) ObserveChanged(EventHandler<UIPasteboardChangeEventArgs>)

Strongly typed notification for the ChangedNotification constant.

public static Foundation.NSObject ObserveChanged (EventHandler<UIKit.UIPasteboardChangeEventArgs> handler);
static member ObserveChanged : EventHandler<UIKit.UIPasteboardChangeEventArgs> -> Foundation.NSObject

Parameters

handler
EventHandler<UIPasteboardChangeEventArgs>

Method to invoke when the notification is posted.

Returns

Token object that can be used to stop receiving notifications by either disposing it or passing it to RemoveObservers(IEnumerable<NSObject>)

Remarks

The following example shows how developers can use this method in their code:


//
// Lambda style
//

// listening notification = UIPasteboard.Notifications.ObserveChanged ((sender, args) => { /* Access strongly typed args */ Console.WriteLine ("Notification: {0}", args.Notification);

Console.WriteLine ("TypesAdded", args.TypesAdded);
Console.WriteLine ("TypesRemoved", args.TypesRemoved);

});

// To stop listening: notification.Dispose ();

// //Method style // NSObject notification; void Callback (object sender, UIKit.UIPasteboardChangeEventArgs args) { // Access strongly typed args Console.WriteLine ("Notification: {0}", args.Notification);

Console.WriteLine ("TypesAdded", args.TypesAdded);
Console.WriteLine ("TypesRemoved", args.TypesRemoved);

}

void Setup () { notification = UIPasteboard.Notifications.ObserveChanged (Callback); }

void Teardown () { notification.Dispose (); }

ObserveChanged(NSObject, EventHandler<UIPasteboardChangeEventArgs>) ObserveChanged(NSObject, EventHandler<UIPasteboardChangeEventArgs>)

Strongly typed notification for the ChangedNotification constant.

public static Foundation.NSObject ObserveChanged (Foundation.NSObject objectToObserve, EventHandler<UIKit.UIPasteboardChangeEventArgs> handler);
static member ObserveChanged : Foundation.NSObject * EventHandler<UIKit.UIPasteboardChangeEventArgs> -> Foundation.NSObject

Parameters

objectToObserve
NSObject NSObject

The object to observe.

handler
EventHandler<UIPasteboardChangeEventArgs>

Method to invoke when the notification is posted.

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 for ChangedNotification notifications.


// Listen to all notifications posted for any object
var token = UIPasteboard.Notifications.ObserveChanged ((notification) => {
	Console.WriteLine ("Observed ChangedNotification!");
};

// Listen to all notifications posted for a single object var token = UIPasteboard.Notifications.ObserveChanged (objectToObserve, (notification) => { Console.WriteLine ($"Observed ChangedNotification for {nameof (objectToObserve)}!"); };

// Stop listening for notifications token.Dispose ();

Applies to