How to: Compress Byte Array

• Apr 05, 2019

To compress a byte array, do the following:

1. Create a ZipArchive class instance.
2. Call its ZipArchive.AddByteArray method to specify a byte array to compress.
3. Call the ZipArchive.Save method to create an archive and save it to a stream.

This code snippet adds a byte array to an archive as an item with the name “myByteArray” and outputs zipped data to the stream.

Note

A complete sample project is available at https://github.com/DevExpress-Examples/compression-library-examples-e4695

ZipExamples.cs

using DevExpress.Compression;
        public void ArchiveByteArray() {
            byte[] myByteArray = Enumerable.Repeat((byte)0x78, 10000).ToArray();
            using (Stream myZippedStream = new FileStream("Documents\\ArchiveByteArray.zip", FileMode.Create)) {
                using (ZipArchive archive = new ZipArchive()) {
                    archive.AddByteArray("myByteArray", myByteArray);
                    archive.Save(myZippedStream);
                }
            }
        }

ZipExamples.vb

Imports DevExpress.Compression
        Public Sub ArchiveByteArray()
            Dim myByteArray() As Byte = Enumerable.Repeat(CByte(&H78), 10000).ToArray()
            Using myZippedStream As Stream = New FileStream("Documents\ArchiveByteArray.zip", FileMode.Create)
                Using archive As New ZipArchive()
                    archive.AddByteArray("myByteArray", myByteArray)
                    archive.Save(myZippedStream)
                End Using
            End Using
        End Sub