C#

public string Id {<br />
get { return entry.Id; }<br />
set {<br />
  entry Id = value;<br />
  TextBoxId.Text = value;<br />
 }<br />
}<br />
<br />

public EntryControl(Entry entry) {<br />
VersionControl versionControl = new VersionControl();<br />
versionControl.Versions = entry.Versions // now I can encapsulate<br />
                                        // everything onwards in<br />
                                        // VersionControl<br />
}

class EntryControl {<br />
  private Textbox textBoxId, textBoxPubDate;<br />
<br />
  public string Id {<br />
     get {return textBoxId.Text; }<br />
     set {textBoxId.Text = value; }<br />
  }<br />
<br />
  public VersionControl VersionControl;<br />
}<br />
<br />
class Client {<br />
  void DoSomething() {<br />
     Entry e = Entry.GetEntry("abc");<br />
     EntryControl ec = new EntryControl();<br />
     ec.Id = e.Id;<br />
     ec.VersionControl = new VersionControl();<br />
     foreach(Version v in e.Versions) {<br />
        VersionTab tab = new VersionTab(); // will be difficult to<br />
                                           // reconstruct e later. What<br />
                                           // if the user inserts a new version<br />
                                           // in the middle...?<br />
        tab.Title = v.Title;<br />
ec.VersionControl.Tabs.Add(tab);<br />
     }<br />
// ...<br />
  }<br />
}