https://learn.microsoft.com/en-us/dotnet/api/system.windows.threading.dispatcherprocessingdisabled.op_inequality?view=netframework-4.8.1&viewFallbackFrom=windowsdesktop-10.0
DispatcherProcessingDisabled.Inequality Operator (System.Windows.Threading) | Microsoft Learn
Determines whether two DispatcherProcessingDisabled objects are not equal.
inequalityoperatorsystemwindowsthreading