GZip Create .gz File

Demonstrates how to compress a file to create a .gz (GZip) file.

Note: The .gz file format is a compressed file format. It contains a single file. The .gz file format is not an archive format (i.e. it does not contain a collection of files/directories such as with the .zip, .rar, or .tar file formats). GZip is often combined with TAR to create a .tgz (or .tar.gz).

Note: It is possible for a .gz to contain more than one file, but this is very uncommon.

Download: Chilkat .NET Assemblies

Chilkat.Gzip gzip = new Chilkat.Gzip();

bool success;

//  Any string unlocks the component for the 1st 30-days.
success = gzip.UnlockComponent("Anything for 30-day trial");
if (success != true) {
    MessageBox.Show(gzip.LastErrorText);
    return;
}

//  File-to-file GZip:
//  Compress "hamlet.xml" to create "hamlet.xml.gz"
success = gzip.CompressFile("hamlet.xml","hamlet.xml.gz");
if (success != true) {
    MessageBox.Show(gzip.LastErrorText);
    return;
}

//  File-to-file ungzip
//  Decompress "hamlet.xml.gz" to create "hamletOut.xml"
success = gzip.UncompressFile("hamlet.xml.gz","hamletOut.xml");
if (success != true) {
    MessageBox.Show(gzip.LastErrorText);
    return;
}

//  File-to-string ungzip
//  Decompress the contents of a .gz directly to a string variable:
//  The 2nd argument indicates the charset of the character
//  data after it is decompressed.
string xmlStr;
xmlStr = gzip.UncompressFileToString("hamlet.xml.gz","utf-8");
if (success != true) {
    MessageBox.Show(gzip.LastErrorText);
    return;
}

textBox1.Text += xmlStr + "\r\n";

//  The Chilkat GZip API provides much more flexibility than shown
//  here.  See the reference documentation at
//  http://www.chilkatsoft.com/refdoc for more information.