title: WpfDatagrid Collectionviewsource clear
body: <p>I am using wpftoolkit datagrid control which was binding using collectionviewsource for records grouping. Whenever user trying to clear the form i need to clear the datagrid also.
  I tried to set datagrid itemsource to null but it works fine for clear functionality .if user trying to add any records to datagrid it's not loading.</p>
  
  <p>So could any one please provide me a solution to clear the datagrid.</p>
  
  <p>Thanks In Advance.</p>