C# Listing files without hidden files (Plus listing option)

Question

here is a code to list the files I've in a directory, then the user can type the file name to open the file.

public static void openFile()
        {
            // List files in FormatedDocuments directory
            String[] showFiles = Directory.GetFiles("FormatedDocuments");

            int filesList = showFiles.GetUpperBound (0) + 1;
            const String folderToOpen = @"FormatedDocuments/";

            Console.WriteLine ("Here is the list of files:");
            for (int i = 0; i < filesList; i++) {
                Console.WriteLine ("\tFile : " + Path.GetFileName (showFiles [i]));
            }

            // When listing is finished, ask the user to select the file he want to open
            Console.WriteLine (@"Type the filename (With extension) you want to open:");
            String userChoice = folderToOpen + Console.ReadLine ();
            Process.Start (userChoice); // Loading with default application regarding the file extension

        }

My questions are:

1. How to list only visible files in the selected directory? [DONE]

2. How to return in the console a number before each file, and ask the user to type this number instead of the full file name? [Waiting proposition]

I'm a beginner and try to learn by myself, don't be too "expert" in your solution please, I know my current code is not optimized, I try to do it step by step, but I accept your help about this code :)

Thank you for your answers.

Answer 1

I have found this:

This should work for you:

 DirectoryInfo directory = new DirectoryInfo(@"C:\temp"); 
 FileInfo[] files = directory.GetFiles();

 var filtered = files.Select(f => f)
                     .Where(f => (f.Attributes & FileAttributes.Hidden) == 0);

 foreach (var f in filtered) {
     Debug.WriteLine(f); 
 }