Adding Data from 1 DataGrid to Another DataGrid

<DataGrid.Columns>
    <DataGridTextColumn Width="200" Header="colS" />
    <DataGridTextColumn Width="200" Header="colA"  />
    <DataGridTextColumn Width="1" Header="colF"   />
</DataGrid.Columns>

private void SongDataGrid_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
     if (SongDataGrid.SelectedIndex >= 0)
    {

        var i = SongDataGrid.SelectedIndex.ToString();
        System.Data.DataRowView lbi = (System.Data.DataRowView)SongDataGrid.SelectedValue;
        var SongName = (lbi.Row[0].ToString());
        var ArtistName = (lbi.Row[1].ToString());
        var FileLocation = (lbi.Row[2].ToString());
        myPlayList.Items.Add(new { colS = SongName, colA = ArtistName, colF = FileLocation });