The eventRightClickPostBack() method executes the server-side EventRightClick handler using a PostBack (ASP.NET WebForms).
DayPilot.Month.eventRightClickPostBack(e[, data]);e (DayPilot.Event) - reference to the event object
data (object) - custom data to be sent to the server-side event handler
dp.eventRightClickPostBack(e, data);