convert base64 to pdf and display in mvc

Question

I have base64 data which i am getting from SOAP. I need to convert that base64 code to pdf and display in popupwindow.

 

if i convert base64 normally it will be in multipage tiff. sometimes it will be jpg, png. So i can't predict format. I have used following code which will convert from base64 to original format. but notsure how to display it in pop up box. whenever i clicked the button which will call below function, file will get downlaod into local machine. i don't want to download, need to display.

 

Any suggestion will be appreciated.

 

In C#
               var byteA =
                    @"base64string ";
                var imageBytes = Convert.FromBase64String(byteA);
                return File(imageBytes, "application /pdf");

In MVC

@Html.ActionLink("View Image", "PdfPartial")