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

StringFormat must be in the form of a format string. In this case it would look like:

Note: if you want to display the total number of hours and minutes and the timespan happens to be greater than 24 hours, there's a caveat with your approach: Here's a workaround.