Why did not redirect to view in ASP.NET MVC 4

Question

All, I have a controller which saved the posted file(Please review below code). It took about 20-30 min to finish it. But I found after saving the file, the RedirectToAction

Answer 1

Using Content(sResultScript, "text/html") to output javascript to redirect index url. IE8 shown a failed page , chrome and Firefox is OK .