Question

Once user logins to my site where i use Form Authentication then how can i stop user to going on Login & Register page if he has allready login & register.

Answer 1

Two ways “off the top of my head”:

1 – Custom Action Filter that redirects the user from the page if they are logged in.

public class RedirectAuthenticatedRequests : ActionFilterAttribute
{
    public override void OnActionExecuting(ActionExecutingContext filterContext)
    {
        if(filterContext.HttpContext.Request.IsAuthenticated) {
            filterContext.Result = new RedirectToRouteResult(
                new RouteValueDictionary(new {
                        controller = "SomeController",
                        action = "SomeAction"
                }
            ));
        }

        base.OnActionExecuting(filterContext);
    }
}

2 – Simple check in the login action method if the user is logged in.

if(Request.IsAuthenticated) return RedirectToAction("SomeOtherView");