How do you get a flat list of all files in IsolStorage?

Question

I need to get a list of all the files in this IsolStorage folder. There are subfolders from the root of the isolated storage, and they should be included in the list.

Regular System.IO classes cannot be used with IsolStorage.

Answer 1

Here's what I came up with - it works, but I would be interested to know if there are any better alternatives:

using System.Collections.Generic;
using System.IO;
using System.IO.IsolatedStorage;
using System.Linq;

public static class IsolatedStorageFileExtensions
{

    /// <summary>
    /// Recursively gets a list of all files in isolated storage
    /// </summary>
    /// <remarks>Based on <see cref="http://dotnetperls.com/recursively-find-files"/></remarks>
    /// <param name="isolatedStorageFile"></param>
    /// <returns></returns>
    public static List<string> GetAllFilePaths(this IsolatedStorageFile isolatedStorageFile)
    {
        // Store results in the file results list
        List<string> result = new List<string>();

        // Store a stack of our directories
        Stack<string> stack = new Stack<string>();

        // Add initial directory
        string initialDirectory = "*";
        stack.Push(initialDirectory);

        // Continue while there are directories to process
        while (stack.Count > 0)
        {
            // Get top directory
            string dir = stack.Pop();

            string directoryPath;
            if (dir == "*")
            {
                directoryPath = "*";
            }
            else
            {
                directoryPath = dir + @"\*";
            }

            // Add all files at this directory to the result List
            var filesInCurrentDirectory = isolatedStorageFile.GetFileNames(directoryPath).ToList<string>();

            List<string> filesInCurrentDirectoryWithFolderName = new List<string>();

            // Prefix the filename with the directory name
            foreach (string file in filesInCurrentDirectory)
            {
                filesInCurrentDirectoryWithFolderName.Add(Path.Combine(dir, file));
            }

            result.AddRange(filesInCurrentDirectoryWithFolderName);

            // Add all directories at this directory
            foreach (string directoryName in isolatedStorageFile.GetDirectoryNames(directoryPath))
            {
                stack.Push(directoryName);
            }

        }

        return result;

    }

}

Answer 2

You are a genius, but also when extracting new directories you need to combine your path with the original directory.

// Add all directories at this directory
foreach (string directoryName in isolatedStorageFile.GetDirectoryNames(directoryPath))
{
    stack.Push(Path.Combine(dir,directoryName));
}