Visual Basic 6.0

Extract a Single ZIP Entry While Preserving Its Stored Path

See more Zip Examples

This example demonstrates how to use the ZipEntry.Extract method to extract a single entry from a ZIP archive.

The example first creates a ZIP archive containing a text file. It then re-opens the ZIP, finds the entry, and extracts it to a base directory.

The Extract method uses the relative path stored within the ZIP entry. Any required subdirectories are created automatically beneath the specified base directory.

Visual Basic 6.0

Dim success As Long
success = 0

' ------------------------------------------------------------
' First create a sample ZIP archive containing a small text file.

Dim zip As New ChilkatZip

success = zip.NewZip("c:/temp/sampleText.zip")
If (success = 0) Then
    Debug.Print zip.LastErrorText
    Exit Sub
End If

' Add a small text file from memory.
success = zip.AddString("myApp/docs/hello.txt","Hello from a ZIP entry!","utf-8")
If (success = 0) Then
    Debug.Print zip.LastErrorText
    Exit Sub
End If

' Write the ZIP archive to disk and close it.
success = zip.WriteZipAndClose()
If (success = 0) Then
    Debug.Print zip.LastErrorText
    Exit Sub
End If

' ------------------------------------------------------------
' Now open the ZIP archive we just created.

Dim zip2 As New ChilkatZip

success = zip2.OpenZip("c:/temp/sampleText.zip")
If (success = 0) Then
    Debug.Print zip2.LastErrorText
    Exit Sub
End If

' Find the entry by its stored ZIP path.
Dim entry As New ChilkatZipEntry

success = zip2.EntryOf("myApp/docs/hello.txt",entry)

If (success = 0) Then
    Debug.Print "Entry not found."
    Exit Sub
End If

' Extract this single entry to the base directory:
' 
'     c:/temp/extracted
' 
' Because the entry's stored path is:
' 
'     myApp/docs/hello.txt
' 
' the file will be extracted to:
' 
'     qa_output/extracted/myApp/docs/hello.txt
' 
' The required subdirectories are created automatically.
success = entry.Extract("c:/temp/extracted")
If (success = 0) Then
    Debug.Print entry.LastErrorText
    Exit Sub
End If

zip2.CloseZip 

Debug.Print "Entry extracted successfully."