//Add To ZoneInfo Table
 public int AddZone(zoneInfo zi)
 {
     helperSearch h = new helperSearch();
     try {
         if (h.checkUniqValue(zi.zoneName, "zoneName", "zoneInfo"))
         {
             db.zoneInfos.InsertOnSubmit(zi);
             db.SubmitChanges();
             return 1;
         }
         else
         {
             return 0;
         }
         }
     catch (Exception error)
     {
         return 3;
     }
 }
 //Add to VahedInfo Table
 public int AddVahed(vahedInfo vi)
 {
     helperSearch h = new helperSearch();
     try
     {
         if (h.checkUniqValue(vi.vahedName, vi.city))
         {
             db.vahedInfos.InsertOnSubmit(vi);
             db.SubmitChanges();
             return 1;
         }
         else return 0;
     }
     catch (Exception error)
     {
         return 3;
     }
 }