When AJAX TabContainer is placed in an UpdatePanel, all styling is lost
May 8th, 2009
When you place an ASP.NET AJAX TabContainer in an UpdatePanel, the styles needed to show it properly may be lost. This is because UpdatePanel sometimes decides not to load required styles on PageLoad or on postbacks.
You can overcome this situation by placing an empty TabContainer outside any UpdatePanel, simply causing the browser to load all the required styles on PageLoad and use them for other TabContainers placed inside UpdatePanels.
Thanks, that problem made me crazy and with your solution it works know. Fine!