title: Setting a DateTime to the first of the next month?
body: <p>If I have <code>var olddate = DateTime.Parse('05/13/2012');</code></p>
  
  <p>and I want to get <code>var newdate = (the first of the month after olddate, 06/01/2012 in this case);</code></p>
  
  <p>What would I code? I tried to set the month+1 but month has no setter.</p>