使用ZipArchive實現記憶體中檔案流壓縮

public interface IFileGenerator
{
string FileName { get; }
    //此處生成使用Byte陣列，使用流是一樣的
byte[] Generate();
}

public sealed class FileGenerator : IFileGenerator
{
    public string FileName => "File.zip";
    public byte[] Generate()
    {
        var list = GetFileGeneratorChain();
using (MemoryStream ms = new MemoryStream())
{
using (var zipArich = new ZipArchive(ms, ZipArchiveMode.Create, true))
{
foreach (var item in list)
{
var bytes = item.Generate();
 var entry = zipArich.CreateEntry(item.FileName);
using (Stream stream = entry.Open())
{
stream.Write(bytes, 0, bytes.Length);
}
}
}
return ms.GetBuffer();
}
    }
    
    private List<IFileGenerator> GetFileGeneratorChain()
    {
        //構造需要生成檔案的操作鏈
    }
}