如何将 blob 数据写入压缩并以 C# 格式下载

假设我从数据库中得到了一些blob。然后我把它们放在字节数组中。例如：

Byte[] lol1=(Byte[])reader["data1"];
Byte[] lol2=(Byte[])reader["data2"];

现在如何将这些字节数组作为文件写入 zip 并将其下载为 C# 中的浏览器文件？

为清楚起见，编辑

"管理器.cs"文件中的相关代码，例如：

    public Byte[] FileDownload(string userName)
    {
        try
        {
            MySqlDataReader reader = new MySqlCommand("SELECT veri FROM veriler WHERE kullanici_id = (SELECT id FROM uyeler WHERE kullanici_adi='" + userName + "')", con).ExecuteReader();
            MemoryStream ms = new MemoryStream();
            GZipStream gzs = new GZipStream(ms, CompressionMode.Compress);
            while (reader.Read())
                gzs.Write((Byte[])reader["veri"], 0, ((Byte[])reader["veri"]).Length);
            return ms.ToArray();
        }
        catch (Exception)
        {
            return Encoding.UTF8.GetBytes(string.Empty);
        }
    }

"DataDown.aspx.cs"文件中的相关代码，例如：

protected void download_Click(object sender, EventArgs e)
{
    Response.AddHeader("Content-type", ContentType);
    Response.AddHeader("Content-Disposition", "attachment; filename=Archive.zip");
    Response.BinaryWrite(new Manager().FileDownload(Session["user"].ToString()));
    Response.Flush();
    Response.End();
}

它返回一个.zip文件，该文件仅是其中的文件。它必须是两个文件。此外，这一个文件已损坏。

string blobName = "data1";
string zipName = "database.zip";
Byte[] blob = (Byte[])reader[blobName];
using(MemoryStream zs = new MemoryStream())
{
  // Build the archive
  using(System.IO.Compression.ZipArchive zipArchive = new ZipArchive(zs, ZipArchiveMode.Create, true))
  {
    System.IO.Compression.ZipArchiveEntry archiveEntry = zipArchive.CreateEntry(blobName);
    using(Stream entryStream = archiveEntry.Open())
    {
      entryStream.Write(blob, 0/* offset */, blob.Length);
    }
  }
  //Rewind the stream for reading to output.
  zs.Seek(0,SeekOrigin.Begin);
  // Write to output.
  Response.Clear();
  Response.ContentType = "application/zip";
  Response.AddHeader("Content-Disposition", string.Format("attachment; filename={0}", zipName));
  Response.BinaryWrite(zs.ToArray());
  Response.End();
 }