改成这样
var query = from i in 表
orderby i.a.Substring(2, 5) descending
where i.a.Contains(prefix)
select i;
var query = from i in 表
orderby i.a.Substring(2, 5) descending
where i.a.Contains(prefix)
select i;
调试欢乐多
=>
select i.a;