ZipArchive FileName vs Name

In our previous post, Listing The Files In A Zip File In C# & .NET, we looked at how to list the files in a Zip file.

The relevant code was this:

// Open the zip file on disk for update
await using (var archive = await ZipFile.OpenAsync(zilFile, ZipArchiveMode.Read))
{
    // Loop through all the entries
    for (var i = 0; i < archive.Entries.Count; i++)
    {
        // Get the file name
        var file = archive.Entries[i];
        // Print the count and name
        Log.Information("File {Count} - {FileMame}", i + 1, file.FullName);
    }
}

You can see where I am accessing the FullName property.

There is a very similar property, Name, that we could also potentially use.

What is the difference?

To illustrate this, I will use a different Zip file. will add files with the following structure.

We then update our code slightly to print both the Name and the FullName.

using System.IO.Compression;
using System.Reflection;
using Serilog;

Log.Logger = new LoggerConfiguration()
    .WriteTo.Console().CreateLogger();

// Extract the current folder where the executable is running
var currentFolder = Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location)!;

// Construct the full path to the zip file
var zilFile = Path.Combine(currentFolder, "Updated.zip");

// Open the zip file on disk for update
await using (var archive = await ZipFile.OpenAsync(zilFile, ZipArchiveMode.Read))
{
    // Loop through all the entries
    for (var i = 0; i < archive.Entries.Count; i++)
    {
        // Get the file name
        var file = archive.Entries[i];
        // Print the count and name
        Log.Information("File {Count} - Name: {Name}, FullName: {FullName}", i + 1, file.Name, file.FullName);
    }
}

The key bit is here:

for (var i = 0; i < archive.Entries.Count; i++)
{
    // Get the file name
    var file = archive.Entries[i];
    // Print the count and name
    Log.Information("File {Count} - Name: {Name}, FullName: {FullName}", i + 1, file.Name, file.FullName);
}

If we run this code, we should see the following:

And here we can see the difference:

• The Name property contrains only the name of the file
• The FullName property contains, in addition to the name, the relative path.

TLDR

The Name property of the ZipArchiveEntry contains the file name, whereas the FullName additionally contains the relative path.

The code is in my GitHub.

Happy hacking!