I'm trying to use NavigateUrl to be able to navigate to page in one directory, but the problem in that if at my dev machine request looks like http://localhost/website/childfolder/page.aspx then if I set NavigateUrl='/childfolder/page.aspx' it does not work as it redirect to http://localhost/childfolder/page.aspx, usual way of '~/childfolder/page.aspx' does not work. Is it possible to update DayPilot code to use Control.ResolveUrl()?