How to detect if an EPiServer page is presented in DOPE mode

In some cases it may be useful to detect when an EPiServer page is displayed in DOPE (Direct On-Page Editing) mode rather than the “normal” View mode. This is how to do it:

string dopemode = Request.Params["DopeMode"];
if (!String.IsNullOrEmpty(dopemode) && dopemode.ToLower() == "enable")
{
   // DOPE mode detected!
}

This is the only way I have found to do this, but it feels like there should be a DOPE flag somewhere in the EPiServer API. If anyone has found it, please leave a comment 🙂