title: How to show row-number in first column of WPF Datagrid
body: <p>While searching I found that, row number can be set to RowHeader easily:</p>
  
  <pre><code>void datagrid_LoadingRow(object sender, DataGridRowEventArgs e) 
  { 
       e.Row.Header = e.Row.GetIndex(); 
  } 
  </code></pre>
  
  <p>It sets row number in RowHeader. But I want to show Row number to first column</p>
  
  <p>Can any one help me how can I achieve this? Thanks</p>