Stylable textbox immediate update

[MrYossu]

I want to modify it so that it triggers an update on every keystroke, so that if they use a web link control, bound to the same source as the textbox, the web link can be updated in real time.

Seems it can't be done out of the box, but see this blog post for a workaround…

http://marlongrech.wordpress.com/2010/12/27/updatesourcetrigger-propertychanged-for-silverlight-4-binding/

Setting IsReadOnly doesn't seem to work