https://learn.microsoft.com/en-us/dotnet/api/system.windows.markup.iqueryambient?view=netframework-4.8.1&viewFallbackFrom=windowsdesktop-6.0
IQueryAmbient Interface (System.Windows.Markup) | Microsoft Learn
Queries for whether a specified property should be treated as ambient in the current scope.
interfacesystemwindowsmarkupmicrosoft
https://learn.microsoft.com/es-es/dotnet/api/system.windows.application.system-windows-markup-iqueryambient-isambientpropertyavailable?view=netframework-4.8.1&viewFallbackFrom=windowsdesktop-10.0
Application.IQueryAmbient.IsAmbientPropertyAvailable(String) Method (System.Windows) | Microsoft...
Queries for whether a specified ambient property is available in the current scope.
applicationstringmethodsystemwindows