SWP/List/FileSystemSample/MainPage.xaml.cs

using System;
using System.Diagnostics;
using System.IO;
using System.Text;
using System.Threading;
using System.Windows;
using FileSystemApi;
using Microsoft.Phone.Controls;
using Directory = FileSystemApi.Directory;
using File = FileSystemApi.File;
using FileAccess = FileSystemApi.FileAccess;
using FileShare = FileSystemApi.FileShare;
using System.Collections.Generic;

namespace PhoneNetworkingSample
{
    public partial class MainPage : PhoneApplicationPage
    {
        // Constructor
        public MainPage()
        {
            InitializeComponent();
            Loaded += new RoutedEventHandler(MainPage_Loaded);
        }

        string folder;

        void MainPage_Loaded(object sender, RoutedEventArgs e)
        {
            folder = "\\Windows\\";

            refreshContents();
        }

        private void open(object sender, System.Windows.Controls.SelectionChangedEventArgs e)
        {
            if (fileList.SelectedItem == null)
                return;

            object selectedObj = fileList.SelectedItem;

            if (selectedObj.GetType() == typeof(DirectoryData))
            {
                folder += ((DirectoryData)selectedObj).Name + "\\";

                refreshContents();
            }

            else if (selectedObj.GetType() == typeof(FileData))
            {
                NavigationService.Navigate(new Uri("/TextDisplay.xaml?path=" + Uri.EscapeDataString(((FileData)selectedObj).FullName), UriKind.Relative));
            }

            else if (selectedObj as string == "[..]")
            {
                folder = folder.Substring(0, folder.LastIndexOf('\\', folder.Length - 2) + 1);

                refreshContents();
            }
        }

        private void refreshContents()
        {
            fileList.Items.Clear();

            fileList.Items.Add("[..]");

            foreach (string dir in Directory.GetDirectories(folder, "*"))
            {
                fileList.Items.Add(new DirectoryData(folder + dir));
            }

            foreach (string dir in Directory.GetFiles(folder, "*"))
            {
                fileList.Items.Add(new FileData(folder + dir));
            }
        }
    }

    struct DirectoryData
    {
        public DirectoryData(string fullname) : this()
        {
            FullName = fullname;
        }

        public string Name
        {
            get
            {
                string[] parts = FullName.Split('\\');
                return parts[parts.Length - 1];
            }
        }
        public string FullName { get; private set; }

        public override string ToString()
        {
            return "[" + Name + "]";
        }
    }

    struct FileData
    {
        public FileData(string fullname) : this()
        {
            FullName = fullname;
        }

        public string Name
        {
            get
            {
                string[] parts = FullName.Split('\\');
                return parts[parts.Length - 1];
            }
        }
        public string FullName { get; private set; }

        public override string ToString()
        {
            return Name;
        }
    }
}