(VB.NET) Find a ZIP Entry by Exact Path Using EntryOf

See more Zip Examples

This example demonstrates how to use the EntryOf method to find a ZIP entry whose stored path exactly matches a specified path.

Unlike EntryMatching, which performs wildcard matching, EntryOf performs an exact path lookup.

This method is useful when:

• The exact ZIP path is already known
• Retrieving a specific file or directory entry
• Verifying whether a particular entry exists in the ZIP archive

Suppose the ZIP archive contains:

docs/
docs/readme.txt
docs/manual.pdf
images/logo.png
data/config/settings.json

ZIP archives may optionally contain explicit directory entries such as docs/. These directory entries can also be retrieved using EntryOf.

The example:

• Finds an exact file entry
• Finds an exact directory entry
• Demonstrates the difference between file and directory entries

Note: This example requires Chilkat v11.0.0 or greater.

Chilkat .NET Downloads Chilkat .NET Framework Chilkat for .NET Core

Dim success As Boolean = False

' This example assumes the Chilkat API to have been previously unlocked.
' See Global Unlock Sample for sample code.

success = False

' Open an existing ZIP archive.
Dim zip As New Chilkat.Zip

success = zip.OpenZip("example.zip")
If (success = False) Then
    Debug.WriteLine(zip.LastErrorText)
    Exit Sub
End If


Dim entry As New Chilkat.ZipEntry

' ------------------------------------------------------------
' Find a specific file entry by its exact ZIP path.

success = zip.EntryOf("docs/readme.txt",entry)

If (success = True) Then
    Debug.WriteLine("Found file entry:")
    Debug.WriteLine("  FileName = " & entry.FileName)
    Debug.WriteLine("  IsDirectory = " & entry.IsDirectory)
    Debug.WriteLine("")
End If


' ------------------------------------------------------------
' Find a directory entry.
' 
' ZIP archives may optionally contain explicit directory entries.
' In this example, "docs/" is a separate directory entry.

success = zip.EntryOf("docs/",entry)

If (success = True) Then
    Debug.WriteLine("Found directory entry:")
    Debug.WriteLine("  FileName = " & entry.FileName)
    Debug.WriteLine("  IsDirectory = " & entry.IsDirectory)
    Debug.WriteLine("")
End If


' ------------------------------------------------------------
' Attempt to find a non-existent entry.

success = zip.EntryOf("images/missing.png",entry)

If (success = False) Then
    Debug.WriteLine("The entry images/missing.png was not found.")
End If


zip.CloseZip()

Debug.WriteLine("Done.")