I often forget the correct syntax to find the current URL, so I posted it to remember it... Always usefull

Request.Url.AbsoluteUri

 public static string BaseSiteUrl
    {
        get
        {
            HttpContext context = HttpContext.Current;
            string baseUrl = context.Request.Url.Scheme + "://" + context.Request.Url.Authority + context.Request.ApplicationPath.TrimEnd('/') + '/';
            return baseUrl;
        }
    }

OR

public string BaseSiteUrl()
()
{
    if(HttpContext.Current.Request.ApplicationPath == "/")
        return "http://" + HttpContext.Current.Request.Url.Host;
    else
        return "http://" + HttpContext.Current.Request.Url.Host + HttpContext.Current.Request.ApplicationPath;
}

intersting link:

• http://www.west-wind.com/weblog/posts/132081.aspx 

More to come