Gets or sets the URL to the relocateable UI folder. It must be a Web URL, and may include scheme and port. It must be a Web URL, and include the path to the site root. It is only to be used to generate direct references to the site in external locations. For references from a page, use root-relative URLs and ResolveUrl etc as appropriate.

[ConfigurationPropertyAttribute("uiUrl", DefaultValue = "~/UI/", IsRequired = true)]
[ManagerTabAttribute(ManagerTab.Site)]
[UrlValidatorAttribute]
public Uri UIUrl { get; set; }