// Edit a task
        public ActionResult EditTask()
        {
            if (!(User.Identity.IsAuthenticated && User.Identity.Name == "admin"))
            {
                return(RedirectToAction("Index", "Home"));
            }
            Guid taskId = Guid.Parse(Request.Form["taskId"]);

            if (Request.Form["edit"] != null)
            {
                Tasks task = TasksDAL.GetTaskById(taskId);
                ViewBag.Task      = task;
                ViewBag.Operation = "Edit";
            }
            else if (Request.Form["delete"] != null)
            {
                if (taskId != null)
                {
                    TasksDAL.DeleteTask(taskId);
                }
            }
            else if (Request.Form["save"] != null)
            {
                TasksDAL.EditTask(Guid.Parse(Request.Form["taskId"]), Request.Form["taskName"], Request.Form["description"],
                                  DateTime.Parse(Request.Form["start"]), DateTime.Parse(Request.Form["end"]),
                                  int.Parse(Request.Form["estimation"]), Request.Form["status"]);
            }
            return(View("../Admin/Task"));
        }