Download Multiple binary file from database

I Have A Binary File From database. I need To download multiple file at a time

This code is help to download Single File From Database i need to download multiple file at a time

protected void download(object sender, EventArgs e)
{
con.Open();
SqlCommand cmd = new SqlCommand("select FileName, FileType, FileData from upload where Id=@id", con);
cmd.Parameters.AddWithValue("@id",((LinkButton)sender).CommandArgument);
SqlDataReader dr = cmd.ExecuteReader();
if (dr.Read())
{
Response.AddHeader("Content-Disposition", "attachment;filename=\"" + dr["FileName"] + "\"");
Response.BinaryWrite((byte[])dr["FileData"]);
Response.End();
}
con.Close();
}
}
}