The client-side AfterRender event is fired every time the Calendar rendering/updating is completed.

It has access to custom data passed to Update method on the server side.

JavaScript

This event only fires during the initial load.

<div id="dp"></div>
<script type="text/javascript">
  var dp = new DayPilot.Calendar("dp");
  dp.onAfterRender = function (args) {
    console.log("Rendering finished.");
  };
  // ...
  dp.init();
</script>

See also:

ASP.NET WebForms

 
<daypilot:DayPilotCalendar 
  id="DayPilotCalendar1" 
  runat="server" 
  ...
  AfterRenderJavaScript="afterRender(data, isCallBack);"         
/>

<script type="text/javascript">
  function afterRender(data, isCallBack) {
    if (isCallBack) {
      console.log("Callback finished. Custom data received: " + data);
    }
  }
</script>

ASP.NET MVC

 
@Html.DayPilotCalendar("dpc", new DayPilotCalendarConfig {
  BackendUrl = ResolveUrl("~/Calendar/Backend"),
  ...
  AfterRenderJavaScript = "afterRender(data, isCallBack)"
})

<script type="text/javascript">
  function afterRender(data, isCallBack) {
    if (isCallBack) {
      console.log("Callback finished. Custom data received: " + data);
    }
  }
</script>