Επεξεργασία

Κοινή χρήση μέσω

RoutedPropertyChangedEventArgs<T>.OldValue Property

  • Reference

Definition

Namespace:
System.Windows
Assembly:
PresentationFramework.dll

Gets the previous value of the property as reported by a property changed event.

public:
 property T OldValue { T get(); };
public T OldValue { get; }
member this.OldValue : 'T
Public ReadOnly Property OldValue As T

Property Value

T

The generic value. In a practical implementation of the RoutedPropertyChangedEventArgs<T>, the generic type of this property is replaced with the constrained type of the implementation.

Remarks

The value and type constraint of this property will be established by the RoutedPropertyChangedEventArgs<T> constructor's type arguments.

Applies to