private const string FN_REGULAR = @"\regular";
        private const string FN_COMPRESSED = @"\compressed";
        PersonList personList = new PersonList();
        public MainWindow()
        {
            InitializeComponent();
        }
        private void btnCreate_Click(object sender, RoutedEventArgs e)
        {
            for (int i = 0; i < 1000; i++)
            {
                personList.Persons.Add(new Person()
                {
                    FirstName = string.Format("First Name {0}", i),
                    LastName = string.Format("Last Name {0}", i),
                    Age = i,
                    City = string.Format("City {0}", i)
                });
            }
            this.dataGrid1.ItemsSource = personList.Persons;
        }
        private void btnSave_Click(object sender, RoutedEventArgs e)
        {
            // Show status.   
            Cursor = Cursors.Wait;   
            label1.Content = "Serializing data to regular file..."; 
            // Serialize the data set to a regular file.   
            string fn = Environment.CurrentDirectory + FN_REGULAR; 
            FileStream fs = new FileStream(fn, FileMode.Create);   
            BinaryFormatter bf = new BinaryFormatter();   
            bf.Serialize(fs, personList);   
            long lenRegular = fs.Length;   
            fs.Close();    
            // Show status.   
            Cursor = Cursors.Wait;
            label1.Content = "Serializing data to compressed file...";            
            // Serialize the data set to a compressed file.   
            fn = Environment.CurrentDirectory + FN_COMPRESSED;   
            fs = new FileStream(fn, FileMode.Create);   
            C1ZStreamWriter compressor = new C1ZStreamWriter(fs);   
            bf = new BinaryFormatter();   
            bf.Serialize(compressor, personList);   
            long lenCompressed = fs.Length;   
            fs.Close();    
            // Show status.   
            Cursor = Cursors.Hand;   
            label1.Content = string.Format("Saved to regular file ({0:#,###} bytes) and " + "compressed file ({1:#,###} bytes)", lenRegular, lenCompressed);  
            // Enable the load buttons.   
            btnLoad.IsEnabled = true;
            btnLoadCompressed.IsEnabled = true;
        }
        private void btnLoad_Click(object sender, RoutedEventArgs e)
        {
            // Clear grid, show status.   
            Cursor = Cursors.Wait;
            dataGrid1.ItemsSource = null;          
            label1.Content = "Loading from regular file...";               
            // Deserialize from regular file.   
            string fn = Environment.CurrentDirectory + FN_REGULAR;   
            FileStream fs = new FileStream(fn, FileMode.Open);   
            long ticks = DateTime.Now.Ticks;   
            BinaryFormatter bf = new BinaryFormatter();              
            PersonList pl = (PersonList)bf.Deserialize(fs);   
            long ms = (DateTime.Now.Ticks - ticks) / TimeSpan.TicksPerMillisecond;   
            fs.Close();              
            // Show result.   
            Cursor = Cursors.Hand;   
            dataGrid1.ItemsSource = pl.Persons;   
            label1.Content = "Loaded from regular file in " + ms.ToString() + " ms.";
        }
        private void btnLoadCompressed_Click(object sender, RoutedEventArgs e)
        {
            // Clear grid, show status.   
            Cursor = Cursors.Wait;   
            dataGrid1.ItemsSource = null;
            label1.Content = "Loading from compressed file...";
            // Deserialize from compressed file.   
            string fn = Environment.CurrentDirectory + FN_COMPRESSED;   
            FileStream fs = new FileStream(fn, FileMode.Open);   
            long ticks = DateTime.Now.Ticks;   
            C1ZStreamReader decompressor;   
            decompressor = new C1ZStreamReader(fs);   
            BinaryFormatter bf = new BinaryFormatter();
            PersonList pl = (PersonList)bf.Deserialize(decompressor);
            long ms = (DateTime.Now.Ticks - ticks) / TimeSpan.TicksPerMillisecond; fs.Close();               
            // Show result.   
            Cursor = Cursors.Hand;   
            dataGrid1.ItemsSource = pl.Persons;   
            label1.Content = "Loaded from compressed file in " + ms.ToString() + " ms.";
        }