C#事务的使用

1.引入相应的命名空间

using System.Transactions;

2.代码事例(using (TransactionScope ts = new TransactionScope()))

public JsonResult DriverCommentAdd(OrderComment orderComment)
        {
            
            try
            {
                using (TransactionScope ts = new TransactionScope())
                {
                    var order = db.Orders.SingleOrDefault(p => p.ID == orderComment.OrderID);
                    if (order.OrderStatus == (byte)OrderStatus.Commanded
                        || order.OrderStatus==(byte)OrderStatus.DriverCommanded)
                    {
                        return Json(new { state = true, msg = "该订单已经评论过了" }, JsonRequestBehavior.AllowGet);
                    }

                    //获取车主信息
                    var user = authMag.GetUser(Token);
                    orderComment.FromID = user.ID;
                    orderComment.ToID = order.PassengerUserID;
                    orderComment.CreateTime = DateTime.Now;
                    orderComment.IsCommentByPassgenger = false;
                    db.Entry<OrderComment>(orderComment).State = EntityState.Added;
                    if (order.OrderStatus == (byte)OrderStatus.Arrived)
                    {
                        order.OrderStatus = (byte)OrderStatus.DriverCommanded;
                    }
                    else if (order.OrderStatus == (byte)OrderStatus.PassengerCommanded)
                    {
                        order.OrderStatus = (byte)OrderStatus.Commanded;
                    }
                    db.SaveChanges();
                    ts.Complete();

                    return Json(new { state = true, msg = "评论成功" }, JsonRequestBehavior.AllowGet);
                }

            }
            catch (Exception ex)
            {
                Log.Debug("错误日志:::" + ex.StackTrace);
                return Json(new { state = false, msg = "评论失败" + ex.Message }, JsonRequestBehavior.AllowGet);
            }
        }