我有必须加载到字节数组中的 excel 文件的数据，我需要对其应用密码保护。我已尝试将 byte[] 转换为 datatable/list 并尝试使用 Excelpackage 应用密码保护，但我无法将 byte[] 数组中的数据正确转换为任何形式。我的文件正在下载，但有一些奇怪的数据。任何人都可以分享你的知识吗？
response.Clear();
response.Buffer = true;
response.ContentEncoding = System.Text.Encoding.UTF8;
response.ContentType = mimeType;
response.AddHeader("content-disposition", "attachment;filename="
+ Uri.EscapeDataString(fileName));
response.Charset = "";
response.Cache.SetCacheability(HttpCacheability.NoCache);
DataTable dt;
MemoryStream stream;
using (stream = new MemoryStream(fileBytes))
{
BinaryFormatter bin = new BinaryFormatter();
stream.Seek(0, SeekOrigin.Begin);
dt = (DataTable)formatter.Deserialize(stream);
stream.Close();
}
using (ExcelPackage pack = new ExcelPackage())
{
ExcelWorksheet ws = pack.Workbook.Worksheets.Add("heelo");
ws.Cells["A1"].LoadFromDataTable(dt, true);
pack.Save("123");
var ms = new System.IO.MemoryStream();
pack.SaveAs(ms);
ms.WriteTo(HttpContext.Current.Response.OutputStream);
ms.Close();
}
response.Flush();
response.End();