I have an action I call from an anchor thusly, Site/Controller/Action/ID where ID is an int.
Later on I need to redirect to this same Action from a Controller.
Is there a clever way to do this? Currently I'm stashing ID in tempdata, but when you
hit f5 to refresh the page again after going back, the tempdata is gone and the page crashes.
You can pass the id as part of the routeValues parameter of the RedirectToAction() method.
return RedirectToAction("Action", new { id = 99 });
This will cause a redirect to Site/Controller/Action/99. No need for temp or any kind of view data.
RedirectToAction("Action", "Controller" ,new { id });
Worked for me, didn't need to do new{id = id}
I was redirecting to within the same controller so I didn't need the "Controller" but I'm not sure on the specific logic behind when the controller is required as a parameter.
The following succeeded with asp.net core 2.1. It may apply elsewhere. The dictionary ControllerBase.ControllerContext.RouteData.Values is directly accessible and writable from within the action method. Perhaps this is the ultimate destination of the data in the other solutions. It also shows where the default routing data comes from.
[Route("/to/{email?}")]
public IActionResult ToAction(string email)
{
return View("To", email);
}
[Route("/from")]
public IActionResult FromAction()
{
ControllerContext.RouteData.Values.Add("email", "mike@myemail.com");
return RedirectToAction(nameof(ToAction));
// will redirect to /to/mike@myemail.com
}
[Route("/FromAnother/{email?}")]`
public IActionResult FromAnotherAction(string email)
{
return RedirectToAction(nameof(ToAction));
// will redirect to /to/<whatever the email param says>
// no need to specify the route part explicitly
}
Also you can send any ViewBag, ViewData.. like this
return RedirectToAction("Action", new { Dynamic = ViewBag.Data= "any data" });