PropertyChangingRoutedEventArgs<T> Class

Provides event arguments for a cancelable property change routed event, indicating the old and new values.

public class PropertyChangingRoutedEventArgs<T> : RoutedEventArgs

Derived:: TabPropertyChangingRoutedEventArgs DoublePropertyChangingRoutedEventArgs SecureStringPropertyChangingRoutedEventArgs StringPropertyChangingRoutedEventArgs

Constructors

Initializes an instance of the class.

public PropertyChangingRoutedEventArgs(RoutedEvent? routedEvent, T oldValue, T newValue)

Parameter	Type	Description
routedEvent	RoutedEvent	The routed event identifier for this event arguments instance.
oldValue	T	The previous value of the property being tracked as reported by an event.
newValue	T	The new value of the property being tracked as reported by an event.

Provides event arguments for a cancelable property change routed event, indicating the old and new values.

public PropertyChangingRoutedEventArgs(RoutedEvent? routedEvent, T oldValue, T newValue, object? source)

Parameter	Type	Description
routedEvent	RoutedEvent	The routed event identifier for this event arguments instance.
oldValue	T	The previous value of the property being tracked as reported by an event.
newValue	T	The new value of the property being tracked as reported by an event.
source	object	An alternate source that will be reported when the event is handled.

Initializes an instance of the class.

public PropertyChangingRoutedEventArgs(T oldValue, T newValue)

Parameter	Type	Description
oldValue	T	The previous value of the property being tracked as reported by an event.
newValue	T	The new value of the property being tracked as reported by an event.

Indicates whether the event should be canceled.

public bool Cancel { get; set; }

bool:: true to cancel the event; otherwise, false. The default value is false.

The new value of the property being tracked as reported by an event.

public T NewValue { get; set; }

The previous value of the property being tracked as reported by an event.

public T OldValue { get; }