MARKUS

using ICSharpCode.SharpZipLib.Zip;

using System;

using System.Collections.Generic;

using System.IO;

using System.IO.Compression;

using System.Linq;

using System.Text;

using System.Windows;

using System.Windows.Controls;

using System.Windows.Data;

using System.Windows.Documents;

using System.Windows.Input;

using System.Windows.Media;

using System.Windows.Media.Imaging;

using System.Windows.Navigation;

using System.Windows.Shapes;

namespace GzipTest

{

    /// <summary>

    /// Interaction logic for MainWindow.xaml

    /// </summary>

    public partial class MainWindow : Window

    {

        public MainWindow()

        {

            InitializeComponent();

            this.Loaded += MainWindow_Loaded;

        }

        private void MainWindow_Loaded(object sender, RoutedEventArgs e)

        {

            string text = System.IO.File.ReadAllText(@"F:\Project_POC\KCOM\GzipTest\json.txt");

            //var result = compress(text);

            var result = compress(text);

            var result2 = decompress(result);

        }

        public static string compress(string str)

        {

            using (MemoryStream outStream = new MemoryStream())

            {

                using (GZipStream gzipStream = new GZipStream(outStream, CompressionMode.Compress))

                using (MemoryStream srcStream = new MemoryStream(System.Text.Encoding.UTF8.GetBytes(str)))                    

                    srcStream.CopyTo(gzipStream);

                return Convert.ToBase64String(outStream.ToArray());

                //return outStream.ToArray();

            }

        }

        public static string decompress(string data)

        {

            byte[] compressed = Convert.FromBase64String(data);

            using (MemoryStream inStream = new MemoryStream(compressed))

            using (GZipStream gzipStream = new GZipStream(inStream, CompressionMode.Decompress))

            using (MemoryStream outStream = new MemoryStream())

            {

                gzipStream.CopyTo(outStream);

                return Encoding.ASCII.GetString(outStream.ToArray());

            }

        }

        private String compress_NEW2(byte[] data)

        {

            String result = "";

            MemoryStream bos = new MemoryStream();

            ZipOutputStream zos = new ZipOutputStream(bos);

            //GZIPOutputStream zos = null;

            //try

            //{

            //    zos = new GZIPOutputStream(bos);

            //}

            //catch (IOException e)

            //{

            //    e.printStackTrace();

            //}

            ZipEntry entry = new ZipEntry("test");

            zos.SetLevel(9); //0-9, 9 being the highest level of compression

            zos.PutNextEntry(entry);

            byte[] buffer = new byte[4096];

            zos.Write(data, 0, data.Length);

            zos.Finish();

            zos.Close();

            return Convert.ToBase64String(bos.ToArray());

        }

        private string decompress_NEW2(string data)

        {

            MemoryStream memoryStream = new MemoryStream(Convert.FromBase64String(data));

            ZipInputStream input = new ZipInputStream(memoryStream);

            ZipEntry zipEntry = input.GetNextEntry();

            while (zipEntry != null)

            {

                String entryFileName = zipEntry.Name;

                // to remove the folder from the entry:- entryFileName = Path.GetFileName(entryFileName);

                // Optionally match entrynames against a selection list here to skip as desired.

                // The unpacked length is available in the zipEntry.Size property.

                byte[] buffer = new byte[4096];     // 4K is optimum

                StreamReader reader = new StreamReader(input);

                return reader.ReadToEnd();

            }

            return null;

        }

    }

}