title: CsvHelper changing how dates and times are output
body: <p>I am using <a href="https://joshclose.github.io/CsvHelper/" rel="noreferrer">CsvHelper</a> to write some CSV files and want to change the format of my dates and times to something specific. Following the advice from  <a href="https://stackoverflow.com/a/31817621/223742">https://stackoverflow.com/a/31817621/223742</a> I can successfully create maps for each of my classes.</p>
  
  <p>However it has the distinct disadvantage that I now need to create custom maps for all the classes that I want to export. As I always want all the fields exported this becomes a maintenance nightmare as I have to amend maps each time. </p>
  
  <p>So is there any simple way to tell CsvHelper to write <strong>all dates and times</strong> using a specific format?</p>