Xceed Zip for .NET gives you the possibility to compress byte arrays. For more information, you can refer to the Compressing a byte array and Compressing stream data topics.
QuickCompression Example
The following example demonstrates how to compress an array of bytes using the static Compress method of the QuickCompression class.
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Imports Xceed.Compression
Dim data() As Byte = System.Text.Encoding.Default.GetBytes( "This is the data to compress compress compress" )
Dim compressedData() As Byte = QuickCompression.Compress( data )
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using Xceed.Compression;
byte[] data = System.Text.Encoding.Default.GetBytes( "This is the data to compress compress compress" );
byte[] compressedData = QuickCompression.Compress( data );
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FileSystem Example
The following example demonstrates how to compress an array of bytes using the FileSystem object model.
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Imports Xceed.Compression
Imports System.IO
Dim data() As Byte = System.Text.Encoding.Default.GetBytes("This is the data to compress compress compress")
Dim sourceStream As New MemoryStream(data)
' If you do not want the inner stream to be closed by the CompressedStream
' then set the CompressedStream's Transient property to true.
Dim destinationStream As New MemoryStream()
Dim compStream As New CompressedStream(destinationStream)
'32K at at time.
Dim buffer(32768) As Byte
Dim bytesRead As Integer = 0
' Loop until we have nothing more to read from the source stream.
Do
bytesRead = sourceStream.Read(buffer, 0, buffer.Length)
If bytesRead > 0 Then
compStream.Write(buffer, 0, bytesRead)
End If
Loop Until bytesRead = 0
' Close the source stream and the CompressedStream.
'
' Because the CompressedStream will automatically close the destination
' memory stream, there is no need to call Close once we are done with the stream.
sourceStream.Close()
compStream.Close()
' To get access to the MemoryStream's compressed data, you can use:
Dim compressedData() As Byte = destinationStream.ToArray()
' ToArray() works even when the memory stream is closed.
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| C# |
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using Xceed.Compression;
using System.IO;
byte[] data = System.Text.Encoding.Default.GetBytes( "This is the data to compress compress compress");
using( MemoryStream sourceStream = new MemoryStream( data ) )
{
// Because the CompressedStream will automatically close the destination
// memory stream, there is no need to declare the memory stream within a using
// statement or to call Close once we are done with the stream.
//
// If you do not want the inner stream to be closed by the CompressedStream
// then set the CompressedStream's Transient property to true.
MemoryStream destinationStream = new MemoryStream();
using( CompressedStream compStream = new CompressedStream( destinationStream ) )
{
// 32K at at time.
byte[] buffer = new byte[ 32768 ];
int bytesRead = 0;
// Loop until we have nothing more to read from the source stream.
while( ( bytesRead = sourceStream.Read( buffer, 0, buffer.Length ) ) > 0 )
{
compStream.Write( buffer, 0, bytesRead );
}
}
// To get access to the MemoryStream's compressed data, you can use:
byte[] compressedData = destinationStream.ToArray();
// ToArray() works even when the memory stream is closed.
} |
For more information, you can refer to the
Compressing a byte array and
Compressing stream data topics.