How to reset CRSF on refresh page ?

If you have set regeneration to true, then every post request will regenerate the token. Pressing refresh is not a post so will not regenerate the token. There is no way of doing a 'force refresh' that I know of and I am not sure why you would want to. If you are not posting anything there is no need to refresh the token, as without a post you will not be susceptible to CSRF.

Hope that helps,

Paul.