List<string> _L = new List<string>() { "张三", "李四", "", "王五" };
var lists =
from l in _L
where !l.Length > 0
select l; foreach(var l in lists)
{
}
var lists =
from l in _L
where !l.Length > 0
select l; foreach(var l in lists)
{
}
{
//是空
}