Can I change the properties of a binding in a DataTrigger, without knowing the binding itself?

Question

I have a TextBox style that formats a number if the box is unfocused, but leaves the number unformatted whlie it\'s being edited.

This is the style I wa

Answer 1

I'm wondering if you could maybe have an attached property on the edits to hold the formatted value (just bound to the real edit value with a Stringformat applied), then in your out of focus trigger you could set the edit value to this property.

This would result in a circular binding though when the edit doesn't have focus, dunno how WPF reacts in such situations.