I've been trying to add a calendar control into an UpdatePanel. While it works perfectly fine in IE 7 (and Safari 3 Beta for PC), it generates error messages in Firefox 2.0.0.4. Specifically, when I click to a different month, and then refresh the page, the calendar control is broken. Clicking on anything within the control (a date/the previous/next month links) gives a popup error message: "Invalid postback or callback argument...". This can be replicated using the UpdatePanel tutorials at http://ajax.asp.net/docs/Samples/UpdatePanelTutorialIntro2/cs/Default.aspx or http://ajax.asp.net/docs/Samples/UpdatePanelTutorialIntro4/cs/Default.aspx.

Anyone know any workarounds?

Can you post the code details..

SO it will be more better.

Both url works fine in my Firefox 2.0.0.4.

That's odd...for me they still don't work, even after turning off all add-ons. Here's specifically what I'm doing at http://ajax.asp.net/docs/Samples/UpdatePanelTutorialIntro2/cs/Default.aspx:

1) I click forward one month to August in the calendar in the UpdatePanel.

2) I refresh the page (F5).

3) I try clicking again on anything in the calendar in the UpdatePanel and get the error message.

Is no one else getting this error message?
 

Hi

It may be a bug of firefox 2.0.May you post it to any forums about Firefox?And I'll make this issue as "Resolved".

Thank you.