Question

My Page structure

I have 3 textboxes in which i have client validation enabled.

I have submit button to post the form data.

Issue

When i click on submit button then it will go to my Post method, suppose i have not entered value in textbox then it throws me error from server side (Http Post).

Now i will enter the value in textbox then i will refresh the browser, it entering into Post method instead of Get !!!

Any help on this ??

Answer 1

This is the default behaviour for a browser which reissues the last request on refresh which in this case happens to be a POST.

If you are looking to prevent a re-POST on refresh you should implement the PRG (POST-Redirect-GET) pattern in MVC. This is where the Controller which receives the POST redirects using a GET request after processing. Thus the last browser request is a GET which will be reissued upon refresh.

[HttpPost]
public ActionResult Create(Model model) {
    if (ModelState.IsValid) {
      //do processing
         return RedirectToAction("Details", new { id = model.Id })
    }
    return View(model);
}