选择返回真/假值的集合，而不是匹配条件的对象列表

Question

var data = ...; //IList<MyClass>
var subset = data.Select(x => x.Name != null);

I was expecting this to return all the objects where Name is not null... instead I get a list of bool values true/false indicating whether that item in the original list matched the test.

Is this normal?

Answer 1

你想要的是哪里的扩展：

var subset = data.Where(x => x.Name != null);