public ErrorPage(Server server, Request request, Exception e) {
if (e == null)
e = new NullReferenceException("Error page passed a null exception");
this.exception = e;
this.httpException = (e is HttpException) ? (HttpException)e : new HttpException(e);
this.server = server;
this.request = request;
}
private bool isRoutine(HttpException e) {
return e.StatusCode == 404 || e.StatusCode == 405;
}