I have a simple test with two buttons and two x asp:panel, a raddatepicker is inside panel2 .
 Ajax manager has both buttons as initiator and both panels as updated controls.
If in the page load i set both panels initially to invisibile. Then button1 server side code sets the culture for the datepicker to "nl-NL" (or any other..), turns the visibilty of panel1=true (nothing in it for the purpose of this example) but does not set the visibility on for panel 2 (so still not visible).
Button2 code behind sets the visibility=true for the panel2, the datepicker is also now visible, turns panel1 visibility=false.
drop the calendar down, and the culture is not set.
Click the button1 again which executes the same culture settings (i tried all three, raddatepicker.culture, raddatepicker.calendar.cultureinfo & raddatepicker.dateinput.cultureinfo) and switches the panel visibility, Click button2, datepicker now visible with correct culture setting.
I gues this has something to do with the fact that panel2 has never been visible until the second button1 click, but I don't know how to work around this.
Any help?

Thanks,
Kevin.
p.s i'm using the latest promthius version
p.p.s using normal full calendar control works.

Hi Kevin,

I have test the presented scenario and found out that the reason for this issue is that, you could not set the culture property on a Control in asp:Panel initially hiden by Visible="False".
Please try to hide the panels by using CSS class and apply the following:

CSS file:

.hide{
   visibility: hidden;
   display: none;
}

Give this a try and let us know how it goes.


Greetings,
Maria Ilieva
the Telerik team

Maria,
Thanks, that works. Is this a work around for something that needs to be fixed in promethius?
Thanks,
Kevin.

Hello Kevin,

I'm glad that the suggestion works for you.

Actually this behavior is not a bug - this is the logic of the controls: it is not possible to update control added in initially hidden parent on the page. So the proposed solution should be used as a general rule.

All the best,
Maria Ilieva
the Telerik team