>I find that quite unusual that we can detect if the Cookies are enabled in the browser by the use of a very simple javascript command, such as navigator.cookieEnabled, but are unable to achieve the same in .NET. The only think close to it is Browser.Cookies, but this is only to know if the browser supports Cookies and not if they are enabled.

Does this help (Have not tested it) ? http://www.codeproject.com/KB/custom-controls/JavaScriptCookieChecker02.aspx