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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, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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