Foundation.NSKeyValueObservingOptions Enumeration
An enumeration of values specifying options to be used with the NSObject.AddObserver method.

Syntax

[ObjCRuntime.Native]
[System.Flags]
public enum NSKeyValueObservingOptions

Remarks

Members

Member NameDescription
InitialUse this to send a notification on first use, without waiting for an actual change to take place.
NewRequest that new values be delivered to the observer.
OldRequests that old values be delivered to the observer.
OldNewRequests that both old and new values be delivered to the observer.
PriorIf set, notifications are sent before and after the change to the property is made.   Otherwise the notifications are only sent after the property has been set.

Requirements

Namespace: Foundation
Assembly: Xamarin.iOS (in Xamarin.iOS.dll)
Assembly Versions: 0.0.0.0