Session FROM ASP.NET to classic asp - asp.net

Question

I have an old system that was developed, not by me, in classic ASP.
I have a new system, developed by me in ASP.NET
How can I pass a session variable (not complex types, just a simple string or int) TO that classic ASP page? I don't need anything back from it.
To add a spanner to the works - how can I do the "hand off" or transfer if the classic ASP site is on a different domain?
Update:
Cannot use the option of passing items via querystring OR storing it in a DB and letting the classic ASP read it from the DB.
Thank you

Answer 1

you could use a classic asp page that sets session variables out of e.g. post parameters.
then call that classic asp page from your asp.net page.
example (not complete) session.asp:
if session("userIsloggedIn") = true and request.form("act") = "setSessionVar" then
session(request.form("name")) = request.form("value")
end if
of course this is some kind of hack but we are talking about classic asp...

Answer 2

I had a different direction. I exchanged the session states via a cookie. Adding these methods. So now instead of calling Session directly, I use these methods instead.
ASP.NET
public static void AddSessionCookie(string key, string value)
{
var cookie = HttpContext.Current.Request.Cookies["SessionCookie"];
if (cookie == null)
{
cookie = new HttpCookie("SessionCookie");
cookie.Expires = DateTime.Now.AddHours(12);
HttpContext.Current.Response.Cookies.Add(cookie);
HttpContext.Current.Request.Cookies.Add(cookie);
}
HttpContext.Current.Session[key] = value;
cookie[key] = value;
}
public static string GetSessionCookie(string key)
{
if (HttpContext.Current.Session[key] == null)
return string.Empty;
string cook = HttpContext.Current.Session[key].ToString();
if (!String.IsNullOrEmpty(cook))
{
var cookie = HttpContext.Current.Request.Cookies["SessionCookie"];
if (cookie == null)
{
cookie = new HttpCookie("SessionCookie");
cookie.Expires = DateTime.Now.AddHours(12);
HttpContext.Current.Response.Cookies.Add(cookie);
HttpContext.Current.Request.Cookies.Add(cookie);
}
if (cookie != null)
cookie[key] = cook;
return cook;
}
return cook;
}
Then for Classic
Function AddSessionCookie(key, value)
Response.Cookies("SessionCookie")(key)= value
Response.Cookies("SessionCookie").Expires = DATE + 1
Session(key) = value
End Function
Function GetSessionCookie(key)
If Session(key) <> "" Then
Response.Write(Session(key))
ELSEIF Response.Cookies("SessionCookie")(key) <> "" THEN
Session(key)=Response.Cookies("SessionCookie")(key)
Set GetSessionCookie = Session(key)
End If
End Function