Question

There is an asynchronous request that need authorize user. I want to authorize in filter attribution. If user can’t login, return a json data that used to tell the client to callback a javascript function to popup the login window.
how can I stop the action in filter attribution?

Answer 1

Create a custom ActionFilterAttribute. Override OnActionExecuting.

public override void OnActionExecuting(ActionExecutingContext filterContext)
{
    if (!filterContext.HttpContext.User.Identity.IsAuthenticated)
    {
        filterContext.Result = new EmptyResult();
        return;
    }

    base.OnActionExecuting(filterContext);
}

Instead of EmptyResult return whatever you want.