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I am developing an ASP.NET MVC 3 web application using Razor and C#. I just discovered that I have some problems with global variables, probably because I am relatively new to MVC. I have a controller with some global variables and action methods. I declared a global variable in order to allow the action methods to manipulate it and reflect the manipulations to all the action methods. I have the following situation: public class myController : Controller { private string _MyGlobalVariable; public ActionResult Index() { _MyGlobalVariable = "Hello"; //other code return View("MyView"); } public ActionResult Print() { _MyGlobalVariable += "Print"; return View("PrintView", _MyGlobalVariable); } } The Print() action method is called with an Html.ActionLink() from the MyView View. The surprising thing is that the value of _MyGlobalVariable is not kept! So the value of _MyGlobalVariable before the instruction _MyGlobalVariable += "Print" is equal to null. Am I making some mistake? How can I keep the value of global variables between calls to Views? Thanks Francesco PS: in my specific case the global variable is a Dictionary<K,V> but I guess it does not change the logic. PPS: I know you can use ViewModels instead of global variables to pass data between action methods but in my case is much less code if I use a Dictionary<K,V> which usually I don't wrap in ViewModels (I use POCOs or Lists<T> )

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