我怎么走直角连接两个列表在C＃？ [英] How do I take the Cartesian join of two lists in c#?

问题描述

我如何把笛卡尔在其中？

How do I take the Cartesian join of two lists with integers in them?

可以这样使用LINQ做什么？

Can this be done with linq?

推荐答案

假设你的意思是交叉连接或笛卡尔加盟：

Assuming you mean a "cross join" or "Cartesian join":

var query = from x in firstList
            from y in secondList
            select new { x, y }

或者

var query = firstList.SelectMany(x => secondList, (x, y) => new { x, y });

如果你想要别的东西（你可以从注释中看到，所谓跨产品已造成有些混乱），请做适当修改你的问题。一个例子是非常方便的：）

If you want something else (as you can see from comments, the term "cross product" has caused some confusion), please edit your question appropriately. An example would be very handy :)

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