c# - How to refresh the expired access token with out login to office 365 using token cache already saved in a database using V2 model? -

hi i'm tring build windows form application access office 365 apis using v2 model. want know how refresh expired access token out login office 365, using token cache saved in database. token cache save through mvc web project database.

since web application store multiple users, user want login in form windows form? if want login windows form specific user, same refresh token in web app using acquiretokensilentasync method.