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);
             }
         }