asp.net mvc - Why uploaded images do not display? -

i uploaded image via form /app_data/uploads/img-name.jpg

in view make:

<img src="~/app_data/uploads/@(model.photo).jpg"> 

but image not appear.

if try view via link (http://localhost:00000/app_data/uploads/img-name.jpg) says:

server error in '/' application.

http error 403 - forbidden.

app_data protected folder hidden browsing. need make action on controller returns data.

public class downloadcontroller {     public actionresult upload(string name)     {         return file(server.mappath("~/app_data/uploads/" + name + ".jpg"), "image/jpeg");     } }