Question

说我有两个清单：

var list1 = new int[] {1, 2, 3};
var list2 = new string[] {"a", "b", "c"};

是否可以编写一个LINQ语句来生成以下列表：

var result = new []{ 
    new {i = 1, s = "a"},
    new {i = 1, s = "b"},
    new {i = 1, s = "c"},
    new {i = 2, s = "a"},
    new {i = 2, s = "b"},
    new {i = 2, s = "c"},
    new {i = 3, s = "a"},
    new {i = 3, s = "b"},
    new {i = 3, s = "c"}
};

编辑：我忘了提到我在查询语法中不想要它。无论如何，根据preetsangha的回答，我得到了以下内容：

var result = list1.SelectMany(i =>  list2.Select(s => new {i = i, s = s}));

Answer 1

var result = from l1 in list1
             from l2 in list2       
             select new { i = l1, s = l2};

Answer 2

preetsangha的回答是完全正确的，但是如果你不想要一个查询表达式那么它就是：

var result = list1.SelectMany(l1 => list2, (l1, l2) => new { i = l1, s = l2} );

（这就是编译器将查询表达式编译成的内容 - 它们是相同的。）

你可以将多个列表与LINQ结合使用吗？

2 个答案: