How to get control of checkbox from view page and pass values to controller as per required

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checkbox

MVC4

My View page code:

@Html.CheckBox("0",new {chkbxusertype = Model.User_Type})
           @Html.Label("Admin","Users")

My Controller page code:

{
           if (ModelState.IsValid)
           {
              
              var dbedit = db.WorkTracker_Login.SingleOrDefault(p => p.User_Id == id);
               dbedit.Username = worktracker_login.Username;
               dbedit.Password = worktracker_login.Password;
               //var UserType=worktracker_login.User_Type;
                 //bool checkvalue = bool.Parse(Request.Form.GetValues("chkbxusertype")[0]);
               bool checkvalue = bool.Parse(Request.Form.GetValues("chkbxusertype")[1]);// Error occurs in this line
                 if (checkvalue == true)
                 {
                     dbedit.User_Type = 1;
                 }
                 else
                 {
                     dbedit.User_Type = 2;
                 }
               db.SaveChanges();
               return RedirectToAction("Index");
           }
           return View(worktracker_login);
       }

Please help in the statement with bool checkvalue. Error exists : Object reference not set