upload-web/downCookie.aspx.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

public partial class downCookie : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        //Response.AddHeader("Set-Cookie", "fileDownload=true; path=/; HttpOnly;");
        //Page.Response.Flush();
        //Page.Response.SuppressContent = true;
        //HttpContext.Current.ApplicationInstance.CompleteRequest();
    }
}