how to logout using okta in asp.net

https://developer.okta.com/docs/guides/sign-users-out/aspnetcore3/main/

https://developer.okta.com/docs/guides/sign-users-out/aspnet/main/#define-the-sign-out-callback

Signing out of Okta requires the app to open a browser and navigate to the end session endpoint. Okta ends the user's session and immediately redirects the user back to your application.