Я знаю, что это очень старая версия, но я столкнулся с той же проблемой (архивирование пустых каталогов с помощью ZipOutputStream)
Я делаю рекурсивный вызов на основе разных родительских каталогов.
public void CompressFolder(string path, ZipOutputStream zipStream, int folderOffset)
{
var files = Directory.GetFiles(path);
var directories = Directory.GetDirectories(path);
//this is where I add the empty directory
//code begin
if (files.Count() == 0 && directories.Count() == 0)
{
DirectoryInfo di = new DirectoryInfo(path);
string cleanName = ZipEntry.CleanName(path.Substring(folderOffset)) + "/";
ZipEntry zipEntry = new ZipEntry(cleanName);
zipEntry.DateTime = di.LastWriteTime;
zipStream.PutNextEntry(zipEntry);
zipStream.CloseEntry();
return;
}
//code end
foreach (string file in files)
{
FileInfo fileInfo = new FileInfo(file);
string cleanName = ZipEntry.CleanName(file.Substring(folderOffset));
ZipEntry zipEntry = new ZipEntry(cleanName);
zipEntry.DateTime = fileInfo.LastWriteTime;
zipEntry.Size = fileInfo.Length;
zipStream.PutNextEntry(zipEntry);
byte[] numArray = new byte[4096];
using (FileStream fileStream = File.OpenRead(file))
{
StreamUtils.Copy(fileStream, zipStream, numArray);
}
zipStream.CloseEntry();
}
foreach (string directory in directories)
{
CompressFolder(directory, zipStream, folderOffset);
}
}