我有对象列表，有字符串列表.
I have list of objects and I have list of strings.
List<String> states = new List<String>(); states.add("wisconsin"); states.add("Florida"); states.add("new york"); List<Foo> foo = new List<Foo>(); foo.add(new Foo(2000, name1, "wisconsin")); foo.add(new Foo(1000, name2, "california")); foo.add(new Foo(300, name3, "Florida"));一个对象具有三个属性: 整数年龄，字符串名称和字符串状态.
An object have three properties: int age, string name and string state.
，并且我已将这些对象添加到列表中.第二个列表由状态"字符串组成.
and I have added these objects to the list. Second list consists of string of "states".
如何比较这两个列表?最好的方法是什么? 我想知道对象中的一个是否具有相同的状态"，其他哪个列表组成. 请引导我.
How I can compare these two lists? What is best way to do it? I want to know if one of objects have same "state", which other list consist. Please guide me.
推荐答案听起来您想要这样的东西:
It sounds like you want something like:
List<Person> people = ...; List<string> states = ...; var peopleWithKnownStates = people.Where(p => states.Contains(p.State));或者只是要找出其中的任何人:
Or just to find if any of the people have known states:
var anyPersonHasKnownState = people.Any(p => states.Contains(p.State));这两个都使用LINQ-如果您以前从未使用过LINQ，则一定要对其进行研究.这非常有用.
Both of these use LINQ - if you haven't come across it before, you should definitely look into it. It's wonderfully useful.
您可能希望将states更改为HashSet<string>，以便Contains操作更快.
You might want to change your states to a HashSet<string> so that the Contains operation is quicker though.