How can I String.Format a TimeSpan object with a custom format in .NET?

Question

What is the recommended way of formatting TimeSpan objects into a string with a custom format?

Answer 1

This is awesome one:

string.Format("{0:00}:{1:00}:{2:00}",
               (int)myTimeSpan.TotalHours,
               myTimeSpan.Minutes,
               myTimeSpan.Seconds);