After getResponse the page loads but doesn't redirect

C# Asp.Net Triple-Des

I have two aspx pages in a single project. For trial purposes these two pages are in a single project but in the future they will be on seperate servers.

There's a button on the first page (Default.aspx) and this is the code behind:

protected void btnSub_Click(object sender, EventArgs e)
{
    var name = System.Security.Principal.WindowsIdentity.GetCurrent().Name;
    WebRequest req = null;
    WebResponse rsp = null;
    try
    {
        const string uri = "http://localhost:52958/WebSite1/Default2.aspx";
        req = WebRequest.Create(uri);
        req.Method = "POST";

        req.ContentType = "text/xml";
        var writer = new StreamWriter(req.GetRequestStream());
        var post = "<VbDoc><Sicil>a</Sicil>,<AdSoyad>b</AdSoyad>,<SubeKodu>c</SubeKodu>,<SubeAdi>d</SubeAdi>,<Mail>e</Mail>,<Tel>f</Tel></VbDoc>";
        post = Encrypt(post);
        writer.Write(post);
        writer.Close();

        rsp = req.GetResponse();
    }
    catch
    {
        throw;
    }
    finally
    {
        if (req != null) req.GetRequestStream().Close();
        if (rsp != null) rsp.GetResponseStream().Close();
    }
}

On the second page (Default2.aspx) PageLoad gets activated when I debug and I can read the encrypted data but after page_load the page never gets visible, the old one stays. This is the page load of the second page.

protected void Page_Load(object sender, EventArgs e)
{
    if (!Page.Response.IsRequestBeingRedirected)
    {
        Page.Response.ContentType = "text/xml";
        var reader = new StreamReader(Page.Request.InputStream);

        var xmlData = reader.ReadToEnd();

        if (xmlData.Length != 0)
        {
            xmlData = Decrypt(xmlData);
            TextBox1.Text = xmlData;
        }
    }

}

---If I use Response.Redirect on the first page the second page comes visible but I lose the encrypted data.

---My boss doesn't allow me to use query strings

How can I be able to read the response and show the second page.

Thanks in advance.

Solution

I Solved it with html post mechanism. .cs like:

protected void btnSub_Click(object sender, EventArgs e)
{ 
    var post = "xml data";
    post = Encrypt(post);
    Label1.Text = post;
}

.aspx is like

<body>
    <form id="form1" runat="server" >
        <asp:Label Visible="False" ID="lblEncrypted"  runat="server"></asp:Label>
    </form>
</body>
<body>
    <form  name="tokenForm" method="POST" action="http://localhost:52958/WebSite1/Default2.aspx">
        <input type="hidden" name ="token" value='<%=Label1.Text%>' />
        <input type="submit"  id="btnGonder" value="gonder"/>
    </form>
</body>