title: Update value of TextBox after any of multiple other TextBoxes have updated
body: <p>I am working on a League Manager for my local billiard hall.</p>
  <p>I created a UserForm to enter scores and I'm looking for an easier way to code up my controls.<br />
  I have a TextBox to display the sum of values contained in other TextBoxes in the UserForm.<br />
  Is there a way to update this sum if any of the TextBoxes change or are updated?</p>
  <p>My research has pointed me in the direction of using a class for TextBoxes but what I've read is that the WithEvents modifier doesn't support Change or Before/After Update.<br />
  I haven't found an example that solves my problem or rather an example that works for only the TextBoxes I want to group, not ALL TextBoxes.<br />
  I could write a subroutine (like below) for each of the TextBoxes but I feel there is a more efficient way.</p>
  <pre class="lang-vb prettyprint-override"><code>Private Sub txtPlayer1_1_Score6_AfterUpdate()
      txtPlayer1_1_Total.Value = CInt(txtPlayer1_1_Score1.Value) + _
                                 CInt(txtPlayer1_1_Score2.Value) + _
                                 CInt(txtPlayer1_1_Score3.Value) + _
                                 CInt(txtPlayer1_1_Score4.Value) + _
                                 CInt(txtPlayer1_1_Score5.Value) + _
                                 CInt(txtPlayer1_1_Score6.Value)
      
  End Sub
  </code></pre>