C#

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

C#

bool success = 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.
Chilkat.Zip zip = new Chilkat.Zip();

success = zip.OpenZip("example.zip");
if (success == false) {
    Debug.WriteLine(zip.LastErrorText);
    return;
}

Chilkat.ZipEntry entry = new Chilkat.ZipEntry();

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

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

if (success == true) {
    Debug.WriteLine("Found file entry:");
    Debug.WriteLine("  FileName = " + entry.FileName);
    Debug.WriteLine("  IsDirectory = " + Convert.ToString(entry.IsDirectory));
    Debug.WriteLine("");
}

//  ------------------------------------------------------------
//  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) {
    Debug.WriteLine("Found directory entry:");
    Debug.WriteLine("  FileName = " + entry.FileName);
    Debug.WriteLine("  IsDirectory = " + Convert.ToString(entry.IsDirectory));
    Debug.WriteLine("");
}

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

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

if (success == false) {
    Debug.WriteLine("The entry images/missing.png was not found.");
}

zip.CloseZip();

Debug.WriteLine("Done.");