C# and WPF tutorial files

WPF/03-TreeViewsSimpleViewModel/WpfTreeView/Directory/DirectoryStructure.cs

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+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+
+namespace WpfTreeView
+{
+    /// <summary>
+    /// A helper class to query information about directories
+    /// </summary>
+    public static class DirectoryStructure
+    {
+        /// <summary>
+        /// Gets all logical drives on the computer
+        /// </summary>
+        /// <returns></returns>
+        public static List<DirectoryItem> GetLogicalDrives()
+        {
+            // Get every logical drive on the machine
+            return Directory.GetLogicalDrives().Select(drive => new DirectoryItem { FullPath = drive, Type = DirectoryItemType.Drive }).ToList();
+        }
+
+        /// <summary>
+        /// Gets the directories top-level content
+        /// </summary>
+        /// <param name="fullPath">The full path to the directory</param>
+        /// <returns></returns>
+        public static List<DirectoryItem> GetDirectoryContents(string fullPath)
+        {
+            // Create empty list
+            var items = new List<DirectoryItem>();
+
+            #region Get Folders
+            
+            // Try and get directories from the folder
+            // ignoring any issues doing so
+            try
+            {
+                var dirs = Directory.GetDirectories(fullPath);
+
+                if (dirs.Length > 0)
+                    items.AddRange(dirs.Select(dir => new DirectoryItem { FullPath = dir, Type = DirectoryItemType.Folder }));
+            }
+            catch { }
+
+            #endregion
+
+            #region Get Files
+
+            // Try and get files from the folder
+            // ignoring any issues doing so
+            try
+            {
+                var fs = Directory.GetFiles(fullPath);
+
+                if (fs.Length > 0)
+                    items.AddRange(fs.Select(file => new DirectoryItem { FullPath = file, Type = DirectoryItemType.File }));
+            }
+            catch { }
+
+            #endregion
+
+            return items;
+        }
+
+        #region Helpers
+
+        /// <summary>
+        /// Find the file or folder name from a full path
+        /// </summary>
+        /// <param name="path">The full path</param>
+        /// <returns></returns>
+        public static string GetFileFolderName(string path)
+        {
+            // If we have no path, return empty
+            if (string.IsNullOrEmpty(path))
+                return string.Empty;
+
+            // Make all slashes back slashes
+            var normalizedPath = path.Replace('/', '\\');
+
+            // Find the last backslash in the path
+            var lastIndex = normalizedPath.LastIndexOf('\\');
+
+            // If we don't find a backslash, return the path itself
+            if (lastIndex <= 0)
+                return path;
+
+            // Return the name after the last back slash
+            return path.Substring(lastIndex + 1);
+        }
+
+        #endregion
+    }
+}