How to format TimeSpan in XAML

Question

I am trying to format a textblock which is bound to a TimeSpan property. It works if the property is of type DateTime but it fails if it is a

Answer 1

The format string is intended to work on a DateTime, not a TimeSpan.

You could change your code to work with DateTime.Now instead. Your xaml is fine:

Update

And from .Net 4 format a TimeSpan as follows: