使用LINQ优化两个列表中的比较 [英] optimize the comparison in two lists with LINQ

问题描述

我有两个对象列表:

客户和员工

我需要检查是否至少有1位与员工同名的客户.

I need to check if there is at least 1 Client with the same name as an employee.

目前，我有:

client.ForEach(a =>
            {
                if (employee.Any(m => m.Name == a.Name && m.FirstName==a.FirstName)
                {
                    // OK TRUE
                }
            });

我可以通过其他方式改善阅读吗?

can I improve reading by doing it in another way?

推荐答案

为什么在使用join之前不进行检查?

why won't you check it before hand using join?

var mergedClients = Client.Join(listSFull,
                x => new { x.Name, x.FirstName},
                y => new { Name = y.Name, FirstName= y.FirstName},
                (x, y) => new { x, y }).ToList();

然后遍历新集合:

mergedClients.ForEach(a =>
//your logic

此方法的唯一缺点(如果让您感到困扰)是将不包含空值.

Only disadvantage of this approach (if it bothers you) is that null values will not be included.

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