public JsonResult getJsonCloseBranches(string lat, string lng)
 {
     JsonResult jr;
     try
     {
         BranchViewModel branch = new BranchViewModel();
         branch.Latitude = Convert.ToDouble(lat);
         branch.Longitude = Convert.ToDouble(lng);
         List<BranchViewModel> closeBranches = branch.GetThreeClosetBranches();
         jr = this.Json(closeBranches, JsonRequestBehavior.AllowGet);
     }
     catch (Exception ex)
     {
         ViewBag.Message = ex.Message;
         jr = Json(ViewBag.Message);
     }
     return jr;
 }