How to listen or get the key event in scheduler e.g. delete key

The Scheduler doesn't contain any element that can get focus. You can detect the Delete key for the whole page using the following code:

<script type="text/javascript">
$(document).keyup(function (e) {
    if (e.keyCode == 46) {
      var firstSelected = dp.multiselect.events()[0];
      dp.commandCallBack("delete", { e: firstSelected });
    }
});

On the server side (ASP.NET MVC):

class Dps : DayPilotScheduler
{
  // ...
  protected override void OnCommand(CommandArgs e)
  {
      switch (e.Command)
      {
          case "delete":
              string id = (string)e.Data["e"]["id"];
              new EventManager(Controller).EventDelete(id);
              Update(CallBackUpdateType.EventsOnly);
              break;
      }
  }
}

Thanks Dan, it works properly now.