可以在动态列表上使用lambda表达式以获得结果

Question

I have following code:

dynamic jsonData = JObject.Parse(data);
var names= new List<dynamic>();
names= jsonData.Properties().Select(p => p.first_name).ToList();

I am unable to make this work as keep on getting error cannot use lambda. Is there a way to get this result? Or should I not use dynamic here?

Json string:

{"items":[{"id":404,"name":"Ken":{"id":215,"neighbourhood":"Mississauga"}]
    ,{"id":407,"name":"John":{"id":215,"neighbourhood":"Toronto"}]
    ,...

Answer 1

You don't need dynamic , I'd advise you not to use it, there's no point.

It appears you have an object with an items property which is an array of objects, and you're trying to grab the name of those objects. Just do this:

var obj = JObject.Parse(data);
var names = obj["items"]
    .Select(item => (string)item["name"])
    .ToList();

Answer 2

像这样尝试

... ((IEnumerable<dynamic>)jsonData.Properties()).Select( ...