Linq如果在另一张表中插入了新行，则更新一行 [英] Linq Update a row if new rows are inserted in another table

问题描述

我这里有4个表，当我使用linq将新行添加到另一个表中时，我正在尝试更新最后一个条目行.

I have 4 tables here, I am trying to update last entry row when new rows are added in another table using linq

CustomerTable :

CustomerId Name   EmailId
-------------------------
1          Paul   [e-mail]
2          John   [e-mail]

在下表中，我为每个LoyatyType分配了点数

Below table I am assigning points for each LoyatyType

LoyaltyPointTable :

LoyaltyPointsId LoyaltyType     Points
---------------------------------------
1               Registration       10
2               Loginstatus         1
3               Downloading        10
4               Redemming           1
5               Sharing            20
6               Refer              10

忠诚度详细信息表:

 LoyaltyDetailsId LoyaltyPointsId CustomerId Dates
 -------------------------------------------------
  1                    1            1       2015-01-22 
  2                    2            1       2015-01-22 
  3                    3            2       2015-01-22
  4                    3            1       2015-01-22 
  5                    4            1       2015-01-22
  6                    4            1       2015-01-24  
  7                    2            1       2015-01-24  // here one new row is added based on LoginStatus

他已经完成了登录一次，所以他的LoginStatus点现在为1，我想在下面的另一张表中更新该点

he has done Login one time , so his LoginStatus Point is 1 now I want update this point in another table below

预期输出:

PriceClaimTable

PriceClaimId CustomerId PriceId  Current Points

1               2         22          150
2               1         23          200 // here update the last row of CustomerId as 231 
                                      //based on every new entry on LoyaltyDetailsTable

说他是否再次登录200 + 1 = 201
然后他正在下载201 + 10 = 211
然后他确实共享211 + 20 = 231

Say if he Logins again 200 + 1 = 201
Then he is Downloading 201 + 10 = 211
Then he does sharing 211+20 = 231

我可以在Linq中使用sql触发器并为此找到解决方案吗?

can i use sql triggers in Linq and find a solution for this ?

推荐答案

使用可以使用triggers来完成这项工作.您可以此来编写一个.

Use can use triggers for doing this job. You can look this for writing one.

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