/// <summary>
/// This method is fired when an item is removed from the cache. It is used to detect when a cache item
/// expires, indicating that the session has expired, and fires the SessionEnd event.
/// </summary>
private void CacheItemRemovedCallbackMethod(string key, object value, CacheItemRemovedReason reason)
{
if (reason == CacheItemRemovedReason.Expired)
{
if (SessionEnd != null)
{
SessionEndedEventArgs e = new SessionEndedEventArgs(key, value);
SessionEnd(this, e);
}
}
}
/// <summary>
/// Fires the session end event and removes it from the
/// application cache (so it doesnt fire again)
/// </summary>
public static void EndSession()
{
// Ensure we have a session key
if (SessionObjectKey == null)
{
return;
}
// Ensure we have a HttpContext
if (HttpContext.Current == null)
{
Debug.WriteLine("No current http context");
return;
}
// Get the current session
HttpSessionState currentSession = HttpContext.Current.Session;
// Ensure we have a current session
if (currentSession == null)
{
Debug.WriteLine("No current session");
return;
}
if (SessionEnd != null)
{
string key = currentSession.SessionID;
object value = currentSession[SessionObjectKey];
SessionEndedEventArgs e = new SessionEndedEventArgs(key, value);
SessionEnd(null, e);
}
// Remove the session from the cache
HttpContext.Current.Cache.Remove(currentSession.SessionID);
}