title: How check if there are more rows to display than datagrid height allows
body: <p>How check if there are more rows (rows height) to display than datagrid height allows. Default behaviour is when rows are more than datagrid height scrollbar is displayed. Other behaviour can be set SizeToContent="Height".</p>
  
  <p>I want' to override method or bind to event in which I can decide whether scrollbar is displayed or increase window height. This is best option to pick. </p>
  
  <p>Maybe someone have other solutions how can I handle with this problem.</p>