title: How to redirect to the Login View automatically when the session is time out in ASP.NET MVC 3.0?
body: <p>guys! 
  I am developing a ASP.NET MVC 3.0 project these days, but I don't know how to redirect to the Login View automatically when the session is time out. Someone told me try to code a customer Action filter class just like "SessionExpireFilterAttribute" in the Global.asax.cs file, indeed, it works well, but I have to add the Label "[SessionExpireFilter]"  to every Action should be concerned.So I don't think it's a good solution.Is there any one else give another better solution to make it works automatically! Thanks in advance！</p>