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}));
Preet Sangha.. 43
var result = from l1 in list1 from l2 in list2 select new { i = l1, s = l2};
Jon Skeet.. 21
preetsangha的答案是完全正确的,但如果你不想要一个查询表达式那么它是:
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.)
var result = from l1 in list1 from l2 in list2 select new { i = l1, s = l2};
preetsangha的答案是完全正确的,但如果你不想要一个查询表达式那么它是:
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.)