C#でZipファイル読み込み用のクラスを作る

using System.IO.Compression;

namespace CommonLib;

public static class ZipReader
{
    public static string JoinEntryPath(string archivePath, string entry)
    {
        return $"{archivePath}|{entry}";
    }
    public static (string ArchivePath, string EntryName) ParseEntryPath(string fullPath)
    {
        var parts = fullPath.Split('|', 2);
        return (parts[0], parts[1]);
    }
    public static List<string> Entries(string archivePath, bool fullPath=true)
    {
        using var archive = ZipFile.OpenRead(archivePath);
        return archive.Entries
            .Select(e => fullPath ? JoinEntryPath(archivePath, e.FullName) : e.FullName)
            .ToList();
    }
    public static void OpenEntry(string joinedPath, Action<Stream> action)
    {
        var (archivePath, entryName) = ParseEntryPath(joinedPath);
        using var archive = ZipFile.OpenRead(archivePath);
        var entry = archive.GetEntry(entryName) 
                    ?? throw new FileNotFoundException($"Entry not found: {entryName}");
        using var stream = entry.Open();
        action(stream);
    }
    public static void ForEachEntryStream(string archivePath, Action<string, Stream> action)
    {
        using var archive = ZipFile.OpenRead(archivePath);
        foreach (var entry in archive.Entries)
        {
            using var stream = entry.Open();
            action(entry.FullName, stream);
        }
    }
}
/*
使用例
string archivePath = @"H:\csharp\console\ZipReader01\sample.zip";

string joinedPath = "";
foreach(var e in ZipReader.Entries(archivePath))
{
    if (joinedPath == "") joinedPath = e;
    Console.WriteLine($"{e}");
}
Console.WriteLine("");

ZipReader.OpenEntry(joinedPath, stream =>
{
    // streamを読み込む処理を行う。    
});

Console.WriteLine("");

ZipReader.ForEachEntryStream(archivePath, (name, stream) =>
{
    Console.WriteLine($"{name}");
    // streamを読み込む処理を行う。
});        

結果
H:\csharp\console\ZipReader01\sample.zip|001.PNG
H:\csharp\console\ZipReader01\sample.zip|002.PNG
H:\csharp\console\ZipReader01\sample.zip|003.PNG

001.PNG
002.PNG
003.PNG
*/