Problem with a static variable

Question

I have a problem with a static variable. Part of the organization of my controllers is as follows:

namespace MyApp.Controllers
{
    public class DevicesController : Controller
    {            
        static int some_var = 0;           

        [AcceptVerbs(HttpVerbs.Post)]
        public ActionResult SetValue(int temp){
           some_var = temp;
           return RedirectToAction("DisplayValue");
        }

        [Authorize]
        public ActionResult DisplayValue(){              
          .... 
          return View(some_object);
        }
     }
}

The problem arises when several users use this view at the same time. The same static variable is used by all users and changes its value. How to solve this?

Answer 1

you can use

HttpContext.Current.Session["some_var"]

instead of some_var, this will help. This will be saved for the user who is registered, one session, and you can get it statically using HttpContext.Current

namespace MyApp.Controllers 
{ 
    public class DevicesController : Controller 
    { 

        [AcceptVerbs(HttpVerbs.Post)] 
        public ActionResult SetValue(int temp){ 
           HttpContext.Current.Session["some_var"] = temp; 
           return RedirectToAction("DisplayValue"); 
        } 

        [Authorize] 
        public ActionResult DisplayValue(){ 

          ....  
          return View((int)HttpContext.Current.Session["some_var"]); 
        } 
     } 
} 

Answer 2

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Answer 3

, .

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if (Session["Count"] == null)
    Session["Count"] = 0;
Session["Count"] = (int)Session["Count"] + MyNewValue;

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Answer 4

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Answer 6

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As I said, statics are neither good nor bad, they just have a different use.