如何使用LINQ合并2个列表? [英] How to combine 2 lists using LINQ?

问题描述

环境:.NET4 C#

Env.: .NET4 C#

大家好，

我要合并这两个列表:{ "A", "B", "C", "D" }和{ "1", "2", "3" }

I want to combine these 2 lists : { "A", "B", "C", "D" } and { "1", "2", "3" }

进入这一个:

{ "A1", "A2", "A3", "B1", "B2", "B3", "C1", "C2", "C3", "D1", "D2", "D3" }

很显然，我可以使用嵌套循环.但是我想知道LINQ是否可以提供帮助. 据我了解，在这种情况下Zip()不是我的朋友，对吧?

Obviously, i could use nested loops. But I wonder if LINQ can help. As far as I understand, Zip() is not my friend in this case, right?

TIA，

推荐答案

基本上，您想要生成笛卡尔乘积，然后将每个2元组的元素连接在一起.这在查询语法中最容易做到:

Essentially, you want to generate a cartesian product and then concatenate the elements of each 2-tuple. This is easiest to do in query-syntax:

var cartesianConcat = from a in seq1
                      from b in seq2
                      select a + b;

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