title: How can I create different cell formats in Winform DataGridView
body: <p>I have a DataGridView that I'm binding to a DataTable.<br>
  The DataTable is a all numeric values.<br>
  There is a requirement that every n rows in the DataGridView has text in it, rather than the numeric values (to visually separate sections for the user).  </p>
  
  <p>I am happy to put this text data in the DataTable or in the DataGridView after binding, but I can't see a way to put this text data in either as the column formats for both require numeric data - I get a "can't put a string in a decimal" error for both.  </p>
  
  <p>Any ideas how I change the format of a particular row or cell in either the DataTable or DataGridView?</p>