how to count cookies

hi

I have checkbox in page that save these checkbox value in cookies and show checkboxs text into label

below is codes:

  protected void Imgorder_Click(object sender, ImageClickEventArgs e)
    {
        if (CheckBox1.Checked)
        {
            Response.Cookies["order"]["Name"] = CheckBox1.Text;
        }
        if (CheckBox2.Checked)
        {

            Response.Cookies["order"]["age"] = CheckBox2.Text;

        }
        if (CheckBox3.Checked)
        {

           Response.Cookies["order"]["sex"] = CheckBox3.Text;

        }
}
GetUsersInfo();

and

 string GetUsersInfo()
    {     string roll;
        roll = Request.Cookies["order"]["Name"];
        roll = roll + " " + Request.Cookies["order"]["age"];
        roll = roll + " " + Request.Cookies["order"]["sex"];
 message.Text = roll;
        return Request.Cookies["order"].Value;
}

here in message.Text=roll

it will show checkboxs selected text but now I want it count cookies["order"] and in message.text shows count of cookies

i.e:

if users select checkbox 1 and checkbox 2 in message.text shows : 2

how  can do it?

Best regards

Neda