https://learn.microsoft.com/zh-tw/dotnet/api/system.windows.threading.dispatcher.validatepriority?view=netframework-4.8.1&viewFallbackFrom=windowsdesktop-10.0
Dispatcher.ValidatePriority(DispatcherPriority, String) Method (System.Windows.Threading) |...
Determines whether the specified DispatcherPriority is a valid priority.
dispatcherstringmethodsystemwindows