Extract a Single File from a RAR Archive

Demonstrates how to open a RAR archive and extract a single file at a time.

Note: The Chilkat RAR ActiveX objects are included in the "Chilkat Zip" ActiveX download. The RAR functionality contained within ChilkatZip2.dll is freeware, however, the Chilkat Zip, GZip, and .Z functionality is not freeware.

The Chilkat RAR for .NET and C++ are bundled in downloads that contain all Chilkat classes (both free and non-free). Make sure you select the download that matches your .NET Framework or VC++ version (6/7/8).

If running on x64, download the ActiveX, .NET, or C++ builds marked specifically for x64.

Download Chilkat .NET for 2.0 Framework

Download Chilkat .NET for 1.0 / 1.1 Framework

Dim rar As New Chilkat.Rar()

'  Note: The Chilkat RAR functionality only provides the ability
'  to open, list, and "unrar" (i.e. extract) RAR archives.  It does
'  not provide the ability to create RAR archives.

'  Also, the Chilkat RAR functionality is free.  It does not
'  require a license to use indefinitely.

Dim success As Boolean

success = rar.Open("abc123.rar")
If (success <> true) Then
    MsgBox(rar.LastErrorText)
    Exit Sub
End If


'  Entries within the RAR can be accessed by name or by index.
Dim entry As Chilkat.RarEntry
entry = rar.GetEntryByName("HelloWorld123.txt")
If (entry Is Nothing ) Then
    MsgBox(rar.LastErrorText)
Else
    success = entry.Unrar("c:/temp/unrarDest")
    If (success = false) Then
        MsgBox(rar.LastErrorText)
    Else
        MsgBox("Success.")
    End If

End If




'  Alternatively, get an entry by index.  The first entry
'  is at index 0.
entry = rar.GetEntryByIndex(0)
If (entry Is Nothing ) Then
    MsgBox(rar.LastErrorText)
Else
    success = entry.Unrar("c:/temp/unrarDest")
    If (success = false) Then
        MsgBox(rar.LastErrorText)
    Else
        MsgBox("Success.")
    End If

End If