How to make backgroundworker return an object

problem ：

I need to make RunWorkerAsync() return a List<FileInfo> . I need to let RunWorkerAsync() Return to one List<FileInfo> .

What is the process to be able to return an object from a background worker? What is the process of returning objects from background staff ？

---

Solution ：

Reference resources ： https://stackoom.com/en/question/3wRP