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Resources » Code Snippets » C# Syntax »
Zip and Unzip files using C#
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using System;
using System.IO;
using System.IO.Compression;
namespace appWin
{
///
/// This enumeration enables user to precise
/// to select mode zip or unzip
///
public enum Action{Zip,UnZip };
///
/// This class performs files compression and decompression
///
public class GZip
{
///
/// This is a private field that represents
/// the full source file path
///
private string _SourceFileName ="";
///
/// This is a private field that represents
/// the full destination file path
///
private string _DestinationFileName ="";
///
/// This byte array is used to stock both
/// The input file contents and out put file
/// contents as bytes
///
private byte[] oBuffer;
///
/// This is the class responsible of
/// zipping and unzipping files
///
private GZipStream oZipper;
///
/// This is a default constructor
///
public GZip() { }
///
/// This is an overloaded constructor
///
/// This represents the
/// full source file name of the one going to be zipped
///
/// This represents the
/// full source file name of the one going to be unziped
///
/// Choose between zip or unzip mode
public GZip(string SourceFileName, string DestinationFileName,Action action)
{
oZipper = null;
this.SourceFileName = SourceFileName;
this.DestinationFileName = DestinationFileName;
/* The user only precizes the zip mode
or the desired action in order to be performed
* instead of using the method directly that is
marked as protected, take a look below */
if (action == Action.Zip)
{ this.CompressFile(); }
if (action == Action.UnZip)
{ this.DecompressFile(); }
}
///
/// This is the source file full path property
///
public string SourceFileName
{
get
{
return _SourceFileName;
}
set
{
_SourceFileName = value;
}
}
///
/// This is the destination full path property
///
public string DestinationFileName
{
get
{
return _DestinationFileName;
}
set
{
_DestinationFileName = value;
}
}
///
/// This is the method responsible for compression, it is marked
/// as protected because we use it is called at the constructor
/// level when a compression mode is chosen instead of using it directly
///
protected void CompressFile()
{
if (File.Exists(SourceFileName))
{
using (FileStream inputFile = File.Open(SourceFileName, FileMode.Open), outputFile = File.Create(DestinationFileName))
{
using (oZipper = new GZipStream(outputFile, CompressionMode.Compress))
{
oBuffer = new byte[inputFile.Length];
int counter = 0;
while ((counter = inputFile.Read(oBuffer, 0, oBuffer.Length)) != 0)
{
oZipper.Write(oBuffer, 0, counter);
}
}
oBuffer = null;
}
}
//TO DO here notify user that the task is performed
}
///
/// This is the method responsible for compression, it is marked
/// as protected because we use it is called at the constructor
/// level when a decompression mode is chosen instead of using it directly
///
protected void DecompressFile()
{
if (File.Exists(SourceFileName))
{
using (FileStream inputFile = File.Open(SourceFileName, FileMode.Open), outputFile = File.Create(DestinationFileName))
{
using (oZipper = new GZipStream(inputFile, CompressionMode.Decompress))
{
oBuffer = new byte[inputFile.Length];
int counter;
while ((counter = oZipper.Read(oBuffer, 0, oBuffer.Length)) != 0)
{
outputFile.Write(oBuffer, 0, counter);
}
}
oBuffer = null;
}
}
MessageBox.Show("Decompression done");
}
}
//TO DO here notify user that the task is performed
}
Now, in order to consume the class service here you is the code
private void button1_Click(object sender, EventArgs e)
{
GZip oZip = new GZip(@"C:\Test.txt", @"C:\Test1.txt", Action.Zip);
oZip = new GZip(@"C:\Test1.txt", @"C:\Test2.txt", Action.UnZip);
}
This is another class but that uses DeflateStream class:
using System;
using System.IO;
using System.IO.Compression;
namespace appWin
{
///
/// This enumeration enables user to precise
/// to select mode zip or unzip
///
public enum Action{Zip,UnZip };
///
/// This class performs files compression and decompression
///
public class Deflat
{
///
/// This is a private field that represents
/// the full source file path
///
private string _SourceFileName ="";
///
/// This is a private field that represents
/// the full destination file path
///
private string _DestinationFileName ="";
///
/// This byte array is used to stock both
/// The input file contents and out put file
/// contents as bytes
///
private byte[] oBuffer;
///
/// This is the class responsible of
/// zipping and unzipping files
///
private DeflateStream oZipper;
///
/// This is a default constructor
///
public Deflat() { }
///
/// This is an overloaded constructor
///
/// This represents the
/// full source file name of the one going to be zipped
///
/// This represents the
/// full source file name of the one going to be unziped
///
/// Choose between zip or unzip mode
public Deflat(string SourceFileName, string DestinationFileName,Action action)
{
oZipper = null;
this.SourceFileName = SourceFileName;
this.DestinationFileName = DestinationFileName;
/* The user only precizes the zip mode
or the desired action in order to be performed
* instead of using the method directly that is
marked as protected, take a look below */
if (action == Action.Zip)
{ this.CompressFile(); }
if (action == Action.UnZip)
{ this.DecompressFile(); }
}
///
/// This is the source file full path property
///
public string SourceFileName
{
get
{
return _SourceFileName;
}
set
{
_SourceFileName = value;
}
}
///
/// This is the destination full path property
///
public string DestinationFileName
{
get
{
return _DestinationFileName;
}
set
{
_DestinationFileName = value;
}
}
///
/// This is the method responsible for compression, it is marked
/// as protected because we use it is called at the constructor
/// level when a compression mode is chosen instead of using it directly
///
protected void CompressFile()
{
if (File.Exists(SourceFileName))
{
using (FileStream inputFile = File.Open(SourceFileName, FileMode.Open), outputFile = File.Create(DestinationFileName))
{
using (oZipper = new DeflateStream(outputFile, CompressionMode.Compress))
{
oBuffer = new byte[inputFile.Length];
int counter = 0;
while ((counter = inputFile.Read(oBuffer, 0, oBuffer.Length)) != 0)
{
oZipper.Write(oBuffer, 0, counter);
}
}
oBuffer = null;
}
}
MessageBox.Show("Compression done");
}
///
/// This is the method responsible for compression, it is marked
/// as protected because we use it is called at the constructor
/// level when a decompression mode is chosen instead of using it directly
///
protected void DecompressFile()
{
if (File.Exists(SourceFileName))
{
using (FileStream inputFile = File.Open(SourceFileName, FileMode.Open), outputFile = File.Create(DestinationFileName))
{
using (oZipper = new DeflateStream(inputFile, CompressionMode.Decompress))
{
oBuffer = new byte[inputFile.Length];
int counter;
while ((counter = oZipper.Read(oBuffer, 0, oBuffer.Length)) != 0)
{
outputFile.Write(oBuffer, 0, counter);
}
}
oBuffer = null;
}
}
// TO DO here notify the user that the action is performed
}
}
}
Now, in order to consume the class service here you is the code
private void button1_Click(object sender, EventArgs e)
{
GZip oZip = new GZip(@"C:\Test.txt", @"C:\Test1.txt", Action.Zip);
oZip = new GZip(@"C:\Test1.txt", @"C:\Test2.txt", Action.UnZip);
}
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Responses
|
| Author: KR 15 Dec 2008 | Member Level: Gold Points : 1 | Hi,
Nice coding..
Very useful for developers..
Thanks,
Regards
Vijay
| | Author: Deepika Haridas 16 Dec 2008 | Member Level: Diamond Points : 0 | Great one..
Thanks for posting it..
Very Useful.
| | Author: MASNSN 16 Dec 2008 | Member Level: Gold Points : 1 | Not at all you're welcome, you can read more of my articles, please visit
http://www.c-sharpcorner.com/Authors/AuthorDetails.aspx?AuthorID=yougerthen
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