Private void DefaultViewDemo ( ) {
   DataTable myDataTable = new DataTable ( );
   // insert code to populate a DataTable with data.

   // bind grid to DataTable.
   myDataGrid.DataSource = myDataTable;
}

private void ChangeRowFilter ( ) {
   DataTable gridTable = ( DataTable ) myDataGrid.DataSource;
   // set the RowFilter to display a company names that begin with A through I..
   gridTable.DefaultView.RowFilter = "CompanyName <= 'I'";
}

Private Sub DefaultViewDemo ( )
   Dim myDataTable As New DataTable
   ' insert code to populate a DataTable with data.

   ' bind DataGrid to DataTable
   myDataGrid.DataSource = myDataTable
End Sub

Private Sub ChangeRowFilter ( )
   Dim gridTable As DataTable = CType ( myDataGrid.DataSource, DataTable )
   ' set the RowFilter to display a company names that begin with A through I.
   gridTable.DefaultView.RowFilter = "CompanyName <= 'I'"
End Sub