Foundation.NSObservedChange.OldValue Property
The previous value on the observed property.

Syntax

public NSObject OldValue { get; }

Value

The old value.

Remarks

For this property to have a value, the options passed to NSObject.AddObserver method should contain the value NSKeyValueObseringOptions.Old.

Requirements

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