PropertyChangingRoutedEventArgs<T> Class
Provides event arguments for a cancelable property change routed event, indicating the old and new values.
public class PropertyChangingRoutedEventArgs<T> : RoutedEventArgs- Type Parameters:
-
T-The return type of the property.
- Inheritance:
- Object EventArgs RoutedEventArgs Object
- Derived:
- TabPropertyChangingRoutedEventArgs DoublePropertyChangingRoutedEventArgs SecureStringPropertyChangingRoutedEventArgs StringPropertyChangingRoutedEventArgs
Constructors
PropertyChangingRoutedEventArgs(T, T)
Initializes a new instance of the PropertyChangingRoutedEventArgs class with the Cancel property set to false.
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. |
PropertyChangingRoutedEventArgs(RoutedEvent, T, T)
Initializes a new instance of the PropertyChangingRoutedEventArgs class with the Cancel property set to false.
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. |
PropertyChangingRoutedEventArgs(RoutedEvent, T, T, Object)
Initializes a new instance of the PropertyChangingRoutedEventArgs class.
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. |
Properties
Cancel
Gets or sets a value indicating whether the event should be canceled.
public bool Cancel { get; set; }Property Value
- Boolean:
trueto cancel the event; otherwise,false.
NewValue
Gets or sets the new value of the property being tracked as reported by an event.
public T NewValue { get; set; }Property Value
- T:
The new value of the property being tracked as reported by an event.
OldValue
Gets the previous value of the property being tracked as reported by an event.
public T OldValue { get; }Property Value
- T:
The previous value of the property being tracked as reported by an event.