c# - How do i get all files from directory including sub directories?

Question

This is the code:

private void SearchForDoc()
        {
            t = Environment.GetEnvironmentVariable("UserProfile")+"\\documents";
            string[] s = Directory.GetFiles(t, "*.txt",);

This will search for txt files in a directory but i want to find also all the text files in its subdirectories. There should be SearchOption searchOption after the "*.txt",

Answer 1

使用这个重载：Directory.GetFiles Method (String, String, SearchOption)，其中 SearchOption 是SearchOption.AllDirectories。

string[] s = Directory.GetFiles(t, "*.txt", SearchOption.AllDirectories);

Answer 2

string[] s = Directory.GetFiles(t,"*.txt", SearchOption.AllDirectories);