>Hi,
>
>I want to determine the Authentication mode set in the web.config of an ASP.NET application.
>
>I found this article:
>https://docs.microsoft.com/en-us/dotnet/api/system.web.configuration.authenticationsection.mode?redirectedfrom=MSDN&view=netframework-4.8#System_Web_Configuration_AuthenticationSection_Mode
>
>But when I add the following code to my page:
>

>// Get the current Mode property.
>AuthenticationMode currentMode =  authenticationSection.Mode;
>

>
>the line authenticationSection has a squiggly red underling and the error message:
>"The name 'authenticationSection' does not exist in the current contect"
>
>Any suggestion of what I am missing?
>
>TIA


authenticationSection seems to be an object of the type AuthenticationSection and that object has not been created in this code.

This might help:

// Get the section.
AuthenticationSection authenticationSection =
(AuthenticationSection)configuration.GetSection(
"system.web/authentication");