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How to send custom data to backend

Asked by Isaac
4 years ago.

I need to pass several filter values to the Backend action of my controller through a DayPilotControl and DayPilotNavigator components. How can this be accomplished?

The view is defined using the MVC razor helper like so:

@Html.DayPilotCalendar("dpc", new DayPilotCalendarConfig(Old.Theme)
ViewType = DayPilot.Web.Mvc.Enums.Calendar.ViewType.Week,
ShowAllDayEvents = true,
AllDayEventHeight = 25,
CssOnly = true,
//EventBubble = "bubble",
CssClassPrefix = "calendar_blue",
BackendUrl = Href("~/Calendar/Backend"),
Height = 800,
HeightSpec = DayPilot.Web.Mvc.Enums.Calendar.HeightSpec.Full,
StartDate = ViewBag.Helper.DateRangeStart,
DayBeginsHour = 6,
DayEndsHour = 21,


The Backend action passes the request on to a subclass of DayPilotCalendar (CalendarComponent):

public ActionResult Backend()
return new CalendarComponent(Request, _calendarService, _sessionService, _calendarHelper).CallBack(this);

If I could get some custom data into the post request that is sent back by the dpc object I could take it from there since I can get the request context and do whatever I need to through the Callback action.

So basically I just need to know how to trigger a refresh on the dpc object and specify some custom parameters to send back to the Backend action.

Comment posted by Isaac
4 years ago.

The best way I've found around this was to pack the extra filter data into the BackendUrl value. Filters cause a page refresh, during which I also grab the current StartDate so the refreshed calendar is on the right spot. Kind of a kludge but it will work for now until a real answer is available.

Answer posted by Dan Letecky [DayPilot]
4 years ago.

Hi Isaac,

You should be able to pass custom data to the server using .clientState property:

ClientState is persisted until the page is refreshed and it is sent to the server with every request.

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