How to return an error message from a FileResult method in an ASP.NET MVC 4 application?

Question

I have a fileresult method in asp.net mvc4 that returns a report in an excel file. Now, how can I return an error message from this method if my conditions are not satisfied! So how can we only return the file from this method ?! Thnks

Answer 1

You can change the signature of the action method to public ActionResult MyMethod() and return FileResult when ModelState.IsValid==true and ViewResult when ModelState.IsValid==false