public async Task <bool> InsertOrderMaster(OrderMaster orderMaster)
        {
            var result = await base.BaseAdd(orderMaster);

            if (result > 0)
            {
                foreach (var item in orderMaster.OrderDetails)
                {
                    await orderDetails.BaseAdd(item);
                }
            }
            return(await Task.FromResult(result > 0));
        }