title: Allowing data additions but not deletions in a MS Access Form's Textbox
body: <p>I am not sure if this is possible, but I would like to be able to restrict anyone from changing/deleting the current text in a textbox, but allow them to add to it?  This way there is no way to accidentally delete data, but if something was wrong, the user can add information/clarification.</p>
  <p>I tried using the KeyDown and KeyPress events to do this (something like below):</p>
  <pre><code>Private Sub TxtIssueDescription_KeyDown(KeyCode As Integer, Shift As Integer)
  
  If Len(Me.TxtIssueDescription.OldValue) &gt; Len(Me.TxtIssueDescription.Value) Then
      Me.TxtIssueDescription.Value = Me.TxtIssueDescription.OldValue
  End If
  
  End Sub
  </code></pre>
  <p>But since it doesn't fire after every character that is typed, it doesn't work (ie .OldValue = &quot;Hello&quot; and .Value = &quot;Good Bye&quot; - not right!)</p>
  <p>I am really looking for a creative idea to this because I don't think using events will work.</p>