C# - Getting file names starting with a specific format in a directory

Question

I've a directory with tons of files and I want only to get the names of the ones starting with sly_.

If I'm not wrong, the patter for this is ^sly_.

This is my try using the solution of this question:

    string pattern = @"^sly_";
    var matches = Directory.GetFiles(@"D:\mypath").Where(path => Regex.Match(path, pattern).Success);

    foreach (string file in matches)
        Console.Write(file); 

Unfortunatelly, this doesn't list the files matching my pattern. So, can someone tell me what's wrong with me code and how can I list the file names starting with sly_?

Thanks in advance.

Answer 1

If you insist on regular expression you should test FileName, not the entire path:

  string pattern = @"^sly_";

  var matches = Directory
    .GetFiles(@"D:\mypath")
    .Where(path => Regex.IsMatch(Path.GetFileName(path), pattern));

  Console.Write(String.Join(Environment.NewLine, matches));