Compress and uncompress with GZipStream : GZipStream « File Directory Stream « C# / CSharp Tutorial

1. C# / CSharp Tutorial
2. File Directory Stream
3. GZipStream

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
using System.IO.Compression;

    class Program
    {
        static void SaveCompressedFile(string filename, string data)
        {
            FileStream fileStream = new FileStream(filename, FileMode.Create, FileAccess.Write);
            GZipStream compressionStream = new GZipStream(fileStream, CompressionMode.Compress);
            StreamWriter writer = new StreamWriter(compressionStream);
            writer.Write(data);
            writer.Close();
        }

        static string LoadCompressedFile(string filename)
        {
            FileStream fileStream = new FileStream(filename, FileMode.Open, FileAccess.Read);
            GZipStream compressionStream = new GZipStream(fileStream, CompressionMode.Decompress);
            StreamReader reader = new StreamReader(compressionStream);
            string data = reader.ReadToEnd();
            reader.Close();
            return data;
        }

        static void Main(string[] args)
        {
           string filename = "compressedFile.txt";
           string sourceString = "asdf";
           SaveCompressedFile(filename, sourceString);
           FileInfo compressedFileData = new FileInfo(filename);
           string recoveredString = LoadCompressedFile(filename);
           recoveredString = recoveredString.Substring(0, recoveredString.Length / 100);
        }
    }