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RoutedPropertyChangedEventArgs<T>.OldValue Property

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

Namespace:  System.Windows
Assembly:  PresentationFramework (in PresentationFramework.dll)

public T OldValue { get; }

Property Value

Type: 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.

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

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1
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