UrlProperty and relative URLs

Question

I have a custom UserControl (inherits System.Web.UI.UserControl) with this property, which should be set to a URL on the site that you want to link to:

 [DefaultValue("~/NewsItem.aspx"), UrlProperty("*.aspx")]
 public string InternalItemViewUrl
 {
  get { return _internalItemViewUrl; }
  set { _internalItemViewUrl = value; }
 }

The control will present the URL picker drop-down correctly, but if you select a URL from the list, it does not change it to a site-relative "~/foo.aspx" link, like HyperLink does, but instead only gets "foo.aspx" which does not work (the control is in /controls and the page obviously is not). If you scroll all the way down and use "Pick URL..." which opens the full pop-up window, a page selected in that dialog does get converted to "~/foo.aspx"

Am I missing something obvious here to make this work?

Answer 1

Check out the attributes on the HyperLink, especially the [Editor] attribute.

[DefaultValue(""),
 WebSysDescription("HyperLink_NavigateUrl"),
 UrlProperty, Bindable(true), WebCategory("Navigation"), 
 Editor("System.Web.UI.Design.UrlEditor, System.Design, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a", typeof(UITypeEditor))]