JavaScript

Drag and drop event resizing is enabled by default (.eventResizeHandling = "Update")

See also

Example

<div id="dp"></div>
<script type="text/javascript">
  var dp = new DayPilot.Month("dp");
  dp.onEventResized = function (args) {
    dp.message("Resized: " + args.e.text());

    // your own AJAX call to the server to notify it about the change
  };
  // ...
  dp.init();
</script>

ASP.NET WebForms

Drag and drop event resizing is disabled by default.

It can be enabled using EventResizeHandling property. It has to be set to one of the following values:

  • CallBack
  • PostBack
  • Notify
  • JavaScript

PostBack event handling type will fire a server-side event handler (EventResize) using a PostBack (or partial AJAX PostBack if the Calendar is inside an UpdatePanel).

CallBack event handling type will fire a server-side event handler (EventResize) using an AJAX callback. CallBack is much faster than PostBack (and partial PostBack).

Notify event handling type will update the Calendar on the client immediately and then notifies the server (EventResize) using an AJAX callback. Notify is much faster than CallBack.

JavaScript event handling will fire the JavaScript code specified in EventResizeJavaScript.

Server-Side Handler

<DayPilot:DayPilotMonth runat="server" id="DayPilotMonth1"
  ...
  EventResizeHandling = "CallBack"
  OnEventResize="DayPilotMonth1_EventResize" 
/>

Example EventResize handler:

protected void DayPilotMonth1_EventResize(object sender, EventResizeEventArgs e)
{
  // update the database
  // ...

  // reload events and refresh the calendar on the client side
  DayPilotMonth1.DataSource = LoadData();  // your method
  DayPilotMonth1.DataBind();
  DayPilotMonth1.UpdateWithMessage("Event resized.");
}

If any changes are made to the event data set (which is the typical case), it is necessary to redraw the event set on the client side using an Update() call.

ASP.NET MVC

Drag & drop event resizing is disabled by default.

It can be enabled using EventResizeHandling property. It has to be set to one of the following values:

  • CallBack
  • Notify
  • JavaScript

CallBack event handling will fire a server-side event handler (OnEventResize) using an AJAX callback.

Notify event handling type will update the Calendar on the client immediately and then notifies the server using an AJAX call. Notify is much faster than CallBack.

JavaScript event handling will fire the JavaScript code specified in EventResizeJavaScript.

Server-Side Handler

@Html.DayPilotMonth("dpm", new DayPilotMonthConfig {
  BackendUrl = ResolveUrl("~/Month/Backend"),
  ...
  EventResizeHandling = EventResizeHandlingType.CallBack
})

The EventResize event can be handled by overriding the OnEventResize method in the DayPilotMonth implementing class:

protected override void OnEventResize(EventResizeArgs e)
{
  new EventManager(Controller).EventResize(e.Id, e.NewStart, e.NewEnd);
  Update();
}

protected override void OnFinish()
{
  // only load the data if an update was requested by an Update() call
  if (UpdateType == CallBackUpdateType.None)
  {
    return;
  }

  Events = new EventManager(Controller).FilteredData(VisibleStart, VisibleEnd).AsEnumerable();  // your method for loading data

  DataStartField = "start";
  DataEndField = "end";
  DataTextField = "text";
  DataIdField = "id";
}

If any changes are made to the event data set (which is the typical case), it is necessary to redraw the event set on the client side using an Update() call.