title: C# add new row to bound datagridview using relations
body: <p>How can I add a new row in a <code>DataGridView</code> when using relations?</p>
  
  <p>When the <code>DataGridView</code> is bound to a <code>DataTable</code>, I can add a row, but when I<code>m using relations, nothing happens, the row won't add to the</code>DataGridView`.</p>