linq lambda let，linqlambda

linq lambda let，linqlambda

1.linq let用法

var query = from x in db.Users
let theage = x.age
let sexstring = x.sex ? "男" : "女"
where theage > 30 && sexstring == "男";
select x;

等效

2.lambda let寫法

var query = db.Users.Select(x => new { x, theage = x.age })
.Select(x => new { x, sexstring = x.sex ? "男" : "女" })
.Where(x => x.x.theage > 30 && x.sexstring == "男")
.Select(x => x.x.x);

摘自:http://bbs.csdn.net/topics/380267995

From:http://www.cnblogs.com/xuejianxiyang/p/5505538.html