What is the WPF XAML Data Binding equivalent of String.Format?

Question

Or, to be more clear, how can I format a block of text (in my case, to be included within a tooltip) such that some portions of the text come from bound values.

In p

Answer 1

If you're using 3.5 SP1, Aku's answer is the way to go. If you're not, you can use the FormatConverter from my WPF Converters library.