从ASP.Net中的sessionID获取会话对象

我使用了本页提供的代码：

http://snipplr.com/view/15180/

它就像一个魅力.

如果链接断开,这里是代码：

void Application_BeginRequest(object sender,EventArgs e)
{
    try
    {
        string session_param_name = "ASPSESSID";
        string session_cookie_name = "ASP.NET_SESSIONID";
        string session_value = Request.Form[session_param_name] ?? Request.QueryString[session_param_name];
        if (session_value != null) { UpdateCookie(session_cookie_name,session_value); }
    }
    catch (Exception) { }

    try
    {
        string auth_param_name = "AUTHID";
        string auth_cookie_name = FormsAuthentication.FormsCookieName;
        string auth_value = Request.Form[auth_param_name] ?? Request.QueryString[auth_param_name];

        if (auth_value != null) { UpdateCookie(auth_cookie_name,auth_value); }
    }
    catch (Exception) { }
}
void UpdateCookie(string cookie_name,string cookie_value)
{
    HttpCookie cookie = HttpContext.Current.Request.Cookies.Get(cookie_name);
    if (cookie == null)
    {
        HttpCookie cookie1 = new HttpCookie(cookie_name,cookie_value);
        Response.Cookies.Add(cookie1);
    }
    else
    {
        cookie.Value = cookie_value;
        HttpContext.Current.Request.Cookies.Set(cookie);
    }
}