The eventClickPostBack() method executes the server-side EventClick handler using a PostBack (ASP.NET WebForms only).
DayPilot.Month.eventClickPostBack(e[, data])e (DayPilot.Event) - object reference
data (object) - custom data to be sent to the server-side event handler
Use this legacy helper to invoke the server-side EventClick handler when DayPilot.Month.eventClickHandling is set to PostBack.
The optional data object lets you send additional values with the request.
dp.eventClickPostBack(e, { source: "custom-button" });