https://learn.microsoft.com/zh-tw/dotnet/api/system.windows.dependencyobject.getlocalvalueenumerator?view=windowsdesktop-9.0
DependencyObject.GetLocalValueEnumerator Method (System.Windows) | Microsoft Learn
Creates a specialized enumerator for determining which dependency properties have locally set values on this DependencyObject.
methodsystemwindowsmicrosoftlearn