title: How to get selected month's last date in C#.net?
body: <p>I am using a drop down list  for selecting the month in <code>.aspx</code> page. I have  to get last date of the selected month  in <code>.aspx.cs</code> page. (some months have 30 days and some have 31 days)</p>
  
  <p>How can I do this?</p>