Why does ActionResult throw error if I don't return a view ?

Question

If condition is true then redirect else return the current view. This is what I am intending to do but I got the first part only not the 2nd such as returning a view, because if I put return to view in else part then ActionResult throws an error because it needs something to return.

 public ActionResult Authenticate(Users u)
        {
            if (basicOps.getUsersLogin(u.UserName, u.Password)) 
            {
                RedirectToAction("GetImagesStories", "Stories");

            }

            return View("Authenticate");


        }

this way I can't redirect because it always executes the return part but I want it to run only if IF condition fails.

Answer 1

You forgot to return RedirectToAction action result:

    public ActionResult Authenticate(Users u)
    {
        if (basicOps.getUsersLogin(u.UserName, u.Password)) 
        {
            return RedirectToAction("GetImagesStories", "Stories");
        }

        return View("Authenticate");
    }