ZipArchive.Read(String, Encoding) Method

Static method that creates a ZipArchive instance from the specified archive file.

Namespace: DevExpress.Compression

Assembly: DevExpress.Docs.v18.2.dll

Declaration

C#

public static ZipArchive Read(
    string fileName,
    Encoding encoding
)

VB.NET

Public Shared Function Read(
    fileName As String,
    encoding As Encoding
) As ZipArchive

Parameters

Name	Type	Description
fileName	String	A string that is the path to the archive file.
encoding	Encoding	The Encoding object that specifies character encoding for the zip item names.

Returns

Type	Description
ZipArchive	A ZipArchive instance that is the zip archive for modification or extraction.

Remarks

Use the Read method to open the archive for modification or extraction. To save the archive, use the corresponding ZipArchive.Save method override.

The Read method allows you to specify character encoding to correctly read item names.

Example

When the file archive is opened with the ZipArchive.Read method, you cannot save it to the same file. The ZipArchive.Save method attempts to overwrite the locked file resulting in an exception.

This code snippet illustrates how you can add a file to an archive and save it with the same name as before.

Note

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

ZipExamples.cs

public void AddFileToArchive() {
    MemoryStream stream = new MemoryStream();
    string[] sourcefiles = this.sourceFiles;
    string pathToZipArchive = "Documents\\Example.zip";

    using (FileStream fs = File.Open(pathToZipArchive, FileMode.Open)) {
        fs.CopyTo(stream);
        fs.Close();
    }
    stream.Seek(0, SeekOrigin.Begin);
    using (ZipArchive archive = ZipArchive.Read(stream, System.Text.Encoding.Default, false)) {
        foreach (string sfile in sourcefiles) {
            archive.AddFile(sfile, "/");
        }
        archive.Save(pathToZipArchive);
    }
}

ZipExamples.vb

Public Sub AddFileToArchive()
    Dim stream As New MemoryStream()
    Dim sourcefiles() As String = Me.sourceFiles
    Dim pathToZipArchive As String = "Documents\Example.zip"

    Using fs As FileStream = File.Open(pathToZipArchive, FileMode.Open)
        fs.CopyTo(stream)
        fs.Close()
    End Using
    stream.Seek(0, SeekOrigin.Begin)
    Using archive As ZipArchive = ZipArchive.Read(stream, System.Text.Encoding.Default, False)
        For Each sfile As String In sourcefiles
            archive.AddFile(sfile, "/")
        Next sfile
        archive.Save(pathToZipArchive)
    End Using
End Sub