File ActionResult in ASP.net MVC

          You can return a file using File ActionResult Type in ASP.net  MVC. The url will download the file which specified in the Action. Lets check some samples.
    
       MIME Types:

       Word (.doc)

      application/msword

     Word (.docx)

      application/vnd.openxmlformats-officedocument.wordprocessingml.document

        PDF (.pdf)

      application/pdf

    more

For Pdf file format It will render it on browser. In the case of a word file (.doc,.docx) it will be downloaded

         public ActionResult Help()

        {
            return File("/Content/Help.pdf", "application/pdf");
        }

In Chrome

IE 9 will render the pdf file in default pdf viewer.here is the result 

Result in firefox

When we want to download a doc file. use the following action

      public ActionResult Help()
        {
            return File("/Content/sample.doc", "application/msword");
        }

The .doc file sample.doc will be downloaded.

In Chrome

In IE 9