https://learn.microsoft.com/en-us/dotnet/api/system.configuration.configurationmanager.refreshsection?view=netframework-4.8.1&viewFallbackFrom=windowsdesktop-10.0
ConfigurationManager.RefreshSection(String) Method (System.Configuration) | Microsoft Learn
Refreshes the named section so the next time that it is retrieved it will be re-read from disk.
system configurationconfigurationmanagerstringmethodmicrosoft