title: C# 30 Days From Todays Date
body: <p>I need my application to expire 30 days from today, I will store the current date in the application config.How will I check if the application has expired ? I don't mind if the user changed the clock back and the app works (too stupid a user to do that). </p>
  
  <pre><code>if (appmode == "Trial") {               
  
              ????
  
              }
  </code></pre>