MVC access application variable in controller

asp.net-mvc, asp.net-mvc-2, c#

Solution

For example, in global.asax:

Application["AppVar"] = "hello";

In any controller method:

string appVar = HttpContext.Application["AppVar"] as string;

Update (7/2018): If you need to access MVC global application data from a DLL library:

using System.Web;
....
if (HttpContext.Current != null && HttpContext.Current.Application != null)
    string appVar = HttpContext.Current.Application["AppVar"] as string;

It is safer to check HttpContext.Current.Application against null as well, because some fake httpcontext library (used in unit test projects) could have a valid context with null "Application".

Problem

Original source

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