Thread safe global variable in an ASP.Net MVC application

Question

I need to implement a multi-threaded global variable in my ASP.Net MVC application.

A ConcurrentDictionary would be ideal but how do I make thi

Answer 1

You can use HttpContext.current.Application for that like following

To create object

HttpContext.Current.Application["GlobalVar"] = new ConcurrentDictionary();

To get or use object

ConcurrentDictionary GlobalVar = HttpContext.Current.Application["GlobalVar"] as ConcurrentDictionary;

EDIT:

Edit your static class with static variable not property like following

public static class GlobalStore
{
    public static ConcurrentDictionary GlobalVar;
}

Now set that variable with new object in you global.aspx Application_Start event like following

GlobalStore.GlobalVar = new ConcurrentDictionary();

Then you can use it in your application by

    GlobalStore.GlobalVar["KeyWord"] = new DateTime();
DateTime obj = GlobalStore.GlobalVar["KeyWord"] as DateTime;

And yes ConcurrentDictionary as well as static variables are thread safe in .net applications