public string GetVehicleMaster(VehicleMasterVM o, string Who)
        {
            List <A> list = SingleList();
            object   res;

            try
            {
                List <VehicleMasterVM> cl = VehicleMasterVM.GetVehicleMaster(o);
                if (cl.Count > 0)
                {
                    res = list.Select(a => new { success = true, status = 200, status_message = "success", data = cl }).FirstOrDefault();
                }
                else
                {
                    res = list.Select(a => new { success = true, status = 203, status_message = "No data found", data = cl }).FirstOrDefault();
                }
            }
            catch (Exception ex)
            {
                res = list.Select(a => new { success = false, status = 300, status_message = ex.Message.ToString(), data = ob }).FirstOrDefault();
            }
            return(JsonConvert.SerializeObject(res));
        }