ViewState data out of sync after Calendar Command previous and next

Hi Colin, I'm glad that you like the controls.

1) ViewState

I assume you are using the CallBack mechanism (commandCallBack client-side function) to change the month. CallBack has a limited reach - it can only modify the control itself (and only its own ViewState). If you need to persist some state, you have the following options:

• Pass the state manually with each callback request back and forth using Update(object) and clientState. This is quite a lot of work, however, and not very efficient.
• Use Session object. I would try to avoid using Session if you don't use it already.
• Switch to UpdatePanel and PostBack event handling and keep using ViewState.
• I would recommend not persisting the event details this way and reading it from the DB instead each time the bubble content is requested. Is there anything you don't like about this approach? Don't be afraid of using the DB, usually it's a simple and fast query.

Another solution would be to pass full event details with the bubble request. I've considered adding this feature for some time but I can't promise any date.

2) Updating other page elements during CallBack

Using UpdatePanel is the easy way but slower as well. You can use AfterRenderJavaScript property to fire custom JavaScript code.

If you are using DayPilot Scheduler, you can show the current month and year in the upper-left corner using BeforeResHeaderRender (check the e.IsCorner property).

Thanks for the reply Dan.

1) Yeah, I'll just make a DB call. Was trying to avoid it since I already had the requred data, but that's Ok.

2) Great! I've now implemented this:

<daypilot:DayPilotMonth id="dpViewMonth"
runat="server"
datastartfield="StartDate" dataendfield="EndDate"
datatextfield="Name" datavaluefield="ID"
datatagfields="name, id"
DataAllDayField="allday"
Days="7" ClientObjectName="dpm"
TimeRangeSelectedHandling="Hold"
HeightSpec="BusinessHours"
EventSelectColor="Blue"
Showalldayevents="False"
Useeventboxes="Always"
ShowToolTip="False"
EventHoverHandling="Disabled"
TimeFormat="Auto"
EventClickHandling="JavaScript"
EventClickJavaScript="popup(e.start());"
BubbleID="DayPilotBubble1"
AfterRenderJavaScript="afterRender(data, isCallBack)"
/>

function afterRender(data, isCallBack)
{
if (isCallBack)
{
var txtMonthName = document.getElementById("txtMonthName");
txtMonthName.innerHTML = dpm.monthNames[dpm.month-1] + " " + dpm.year;
}
}

Thanks for posting your code, Colin!

I have tried this approach and the js callback gets called, but the data parameter is consistently null (and isCallback is false when I include that as a parameter).

The scheduler sits inside an updatepanel.

Jakob