File Directory Stream C# Tutorial

using System;
using System.IO.IsolatedStorage;
using System.IO;
  class MainClass
  {
    static void Main(string[] args)
    {
      using (IsolatedStorageFile store =IsolatedStorageFile.GetUserStoreForAssembly())
      {
        using (IsolatedStorageFileStream isStream = new IsolatedStorageFileStream("MyData.txt",FileMode.OpenOrCreate, store))
        {
          using (StreamWriter sw = new StreamWriter(isStream))
          {
            sw.WriteLine("data.");
            sw.WriteLine("Cool?");
          }
        }
      }
    }
  }