title: Check leap year in C#
body: <p>I want to add entry date + 1year to a column called finishing date.</p>
  
  <p>If the entry date is in leap yr, i need to add 364 days, if not 365 days.</p>
  
  <p>Is there a way to check this in c#, using current datetime's year &amp; manipulate leap yr/not, then add the days.</p>
  
  <p>Thanks.</p>