title: Trim number function
body: <p>I need to trim the last portion of the string that contains the number.
  In addition, I need to trim the part which does not start with the zero</p>
  
  <p>This is what I am doing and I did not include the 0 since I am not sure how should I ignore it if the numbers starts with the zero.</p>
  
  <pre><code>        textBox13.Text = "A14C0681414010";
          //textBox13.Text = "A14C1381414010"; numbers will vary
          var first = textBox13.Text.TrimEnd("123456789".ToCharArray());
          var last = textBox13.Text.Substring(first.Length);
          // part 1 should contain A14C0
          // part 2 should contain 681414010
  </code></pre>
  
  <p>How can I achieve it? My function does not do it</p>