linq查询 [英] linq queery

问题描述

向所有人致敬，
我有List< expenserecord> ，该列表包含ID，名称，金额.
示例:Id |姓名|金额
--------------------
1 |一个| 50
2 | b | 10
3 | c | 40
4 | d | 6
5 |一个| 5
6 | c | 80

从中我必须选择名称和金额，如下所示

姓名|金额
----------------------
一个| 55
b | 10
c | 120
d | 6
(上面我做了一些包含相同名称的Amount of Amount)

我该如何写Querry来检索这样的数据

请帮助我...

hai to all ,
i have List<expenserecord> , that list contains Id, Name, Amount.
Example: Id | Name | Amount
--------------------
1 | a | 50
2 | b | 10
3 | c | 40
4 | d | 6
5 | a | 5
6 | c | 80

from that i have to select the Name and Amount like the below

Name | Amount
----------------------
a | 55
b | 10
c | 120
d | 6
(above i made the Some of Amount which contains the same name)

How can i write querry to retrive data like that

Please help me...

推荐答案

这只是LINQ中的一个简单的查询组.

It''s just a simple group by query in LINQ.

var result =
        from p in table
        group p by p.Name into g
        select new { Name = g.Key, TotalAmount = g.Sum(p => p.Amount) };

这篇关于linq查询的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！