http://msmvps.com/blogs/laflour/archive/2008/07/28/asp-net-theme-across-all-pages-with-xmlhttprequest-calls.aspxASP.NET Themes is very powerful feature, but some limitations exist when you are trying to apply Themes dynamically. For the single page the way to apply theme is to use Page.Theme = “&lt;themeName&gt;”; inside&#160; the OnPreInit event, but if you tryenCommunityServer 2008.5 SP2 (Build: 40407.4157)http://msmvps.com/blogs/laflour/archive/2008/07/28/asp-net-theme-across-all-pages-with-xmlhttprequest-calls.aspx#1734551Fri, 23 Oct 2009 12:36:10 GMTd67277c4-116b-43f1-b688-e9ef184ea916:1734551Ankit Joshi<p>Nice bro,</p> <p>Its helps me a lot</p> <div style="clear:both;"></div><img src="http://msmvps.com/aggbug.aspx?PostID=1734551" width="1" height="1">http://msmvps.com/blogs/laflour/archive/2008/07/28/asp-net-theme-across-all-pages-with-xmlhttprequest-calls.aspx#1642470Mon, 28 Jul 2008 21:21:06 GMTd67277c4-116b-43f1-b688-e9ef184ea916:1642470Darren Neimke<p>Nice tip... thanks for sharing Michael!</p> <div style="clear:both;"></div><img src="http://msmvps.com/aggbug.aspx?PostID=1642470" width="1" height="1">