protected void btnDownloadAll_Click(object sender, EventArgs e)
{
string filename = PortfolioService.ExtractPersonalPhotos(GetWhereClause());
byte[] buf = FileUtils.LoadFile(filename);
Response.Clear();
Response.ContentType = "application/zip";
Response.AddHeader("Content-Disposition", "attachment; filename=" + System.IO.Path.GetFileName(System.IO.Path.ChangeExtension(filename, "zip")));
Response.AddHeader("Content-Length", buf.Length.ToString());
Response.BinaryWrite(buf);
Response.End();
System.IO.File.Delete(filename);
}