Styling output with custom formatters
As we saw in Figures 14.2 and 14.3, the default formatting for List<Footballer> is not very helpful in understanding our team at a glance. Thankfully, the Formatter class gives you a Register method that allows you to provide your own custom formatter.
The Register method takes in a specific type that the formatter should format, FormatDelegate, consisting of an instance of that type, and a writer that allows you to write content to the output. Let’s see it in action by registering custom formatting for any IEnumerable of Footballer objects:
Formatter.Register<IEnumerable<Footballer>>(
(players, writer) => {
writer.WriteLine("<h3>Team Scoring Stats</h3>");
writer.WriteLine("<table>");
writer.WriteLine("<thead><tr>");
writer.WriteLine("<th>Name<...
