The AzureWebJobsStorage configuration is typically stored in the appsettings.json or local.settings.json files, and it is not recommended to store passwords or other sensitive data in plain text configuration files. However, if you still want to use the app.config file, you can add the System.Configuration.ConfigurationManager
NuGet package to your app, and your code will compile and use the App.config file. To use the app.config file as your configuration provider, you need to load the settings file in the startup code of your app.
References: