title: EPPLUS preserve date format when saving CSV
body: <p>I am using EPPLUS to create a csv file.  When I create an Excel file, I can format the date thus:</p>
  <pre><code>ws.Cells[&quot;A:A&quot;].Style.Numberformat.Format = &quot;yyyy-MMM-dd&quot;;
  </code></pre>
  <p>Which is what I need in my csv.  However, if I try to save the worksheet as a csv, any dates end up as numbers.</p>
  <p>***EDIT - I appreciate Excel stores the date as a serial number, I was just wondering if EPPLUS had a feature I can't locate to help me out.</p>