title: How to add seconds to the value of DateTimePicker?
body: <p>I need to add seconds to the value of DateTimePicker. Can anyone tell me why the value remains unchanged after executing following code? And also I want to change the displayed value of DateTimePicker to its new value. This should be easy. mmm I dont know why.</p>
  
  <p>Thanks.</p>
  
  <pre><code>protected override void updateTime(uint seconds)
  {
      this.dtPicAdmitDate.Value.AddSeconds(seconds);
  }
  </code></pre>