SourceChangedEventArgs.OldSource Property

 
System_CAPS_noteNote

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Gets the old source involved in this source change.

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

public PresentationSource OldSource {
	[SecurityCriticalAttribute]
	get;
}

UIPermission

to get this value. Associated enumeration: AllWindows

.NET Framework
Available since 3.0
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