title: Showing last time a text box was changed
body: <p>I have text boxes that contain counts from a database. I want to be able to show the date and time that these text boxes were last changed. This what I have so far:</p>
  
  <pre><code>private void tbOnhand_TextChanged(object sender, TextChangedEventArgs e)
  {
  label1.Content = "Last time changed was " + DateTime.Now;
  }
  </code></pre>
  
  <p>This works but it shows the date of when the window opens. I want to be able to save the date and time and it not change until the text box is changed. Also, should there be a place for this in my database to store the time? Or is that not necessary. thanks</p>