using System;
using System.IO;
using System.IO.IsolatedStorage;

using (IsolatedStorageFile MyIsolatedStorageFile = IsolatedStorageFile.GetUserStoreForAssembly()) {
            MyIsolatedStorageFile.CreateDirectory("Nathan");

            using (Stream MyStream = new IsolatedStorageFileStream("ExpDet.txt", FileMode.Create, MyIsolatedStorageFile)) {
                StreamWriter MyStreamWriter = new StreamWriter(MyStream);
                MyStreamWriter.WriteLine("Nathan Soft Ware Engineer");
                MyStreamWriter.Flush();
            }

            Console.WriteLine(MyIsolatedStorageFile.CurrentSize.ToString());
            Console.WriteLine(MyIsolatedStorageFile.Scope.ToString());

            string[] MyFiles = MyIsolatedStorageFile.GetFileNames("*.*");
            foreach (string Myfile in Myfiles) {
                Console.WriteLine(Myfile);
            }
        }