title: Change number group separator in numeric columns of DataGridView
body: <p>I want to format cells that are numeric in this way <code>1 231 241.45</code>. I've tried <code>N2</code> format option:</p>
  
  <pre><code>datagridview1.Columns["col1"].DefaultCellStyle.Format = "N2";
  </code></pre>
  
  <p>But <code>N2</code> format puts comma instead of space. I want space as number group separator. 
  Is it possible to change number group separator? </p>