通过linq查询一起添加字符串

本文介绍了通过linq查询一起添加字符串的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我正在尝试合并这些值，如果有多个所有者ID，则会将这些行值加在一起.

I'm trying to combine the values, if multiple owner id it'll add the line values together.

i.snag.gy/fOWWQ.jpg

有了给定的图像，如果我的查询运行了，我最终会得到

With the image Given, if my query is ran I would end up with

i.snag.gy/qO1DO.jpg

到目前为止我已经尝试过的

What I've tried so far

from Person in TargetGroups group Person by Person.PersonId into g select new {g.PersonId, g.Value}

推荐答案

您只需要将Car列的值连接起来，就像这样:

You just need to concatenate values of Car column like this:

TargetGroups .GroupBy(x => x.PersonId) .Select(x => new { PersonId = x.Key, Cars = string.Join(",", x.Select(a => a.Car)) });

查询语法:

from Person in TargetGroups group Person by Person.PersonId into g select new { PersonId = g.Key, Cars = string.Join(",", g.Select(x => x.Car)) }