public static bool EditPeremission(UserPermession tb)
       {
           db = new UcasProEntities();

           try
           {
               var q = db.UserPermessions.Where(g => g.UserID == tb.UserID).Single();
               if (q.ID != 0 && q.UserID != 0)
               {
                   q.PermessionValue = tb.PermessionValue;
                   db.SaveChanges();
                   return true;
               }
               else
               {
                   return false;
               }
           }
           catch (Exception)
           {
               
               throw;
           }

          
       }
       public static bool AddPeremission(UserPermession tb)
       {
           db = new UcasProEntities();
           db.UserPermessions.Add(tb);
           db.SaveChanges();
           return true;


       }