title: Implementing trial app in C#
body: <h3>Duplicate</h3>
  <blockquote>
  <p><a href="https://stackoverflow.com/questions/564221/time-bomb-needed-in-asp-net-application">Time bomb needed in asp.net application</a></p>
  </blockquote>
  <hr />
  <p>I've done developing my app in C#. I need some info of how I can implement 'trial' functionality for my app (I want to let the user use the app for 30 day for example)</p>