Get the DefaultView DataRowView from a DataRow

row.Table.DefaultView[row.Table.Rows.IndexOf(row)]

DataRowView newRowView = null;
        foreach (DataRowView tempRowView in myDataTable.DefaultView)
        {
            if (tempRowView.Row == rowToMatch)
                newRowView = tempRowView;
        }
        if (newRow != null)
            UseNewRowView(newRowView);
        else
            HandleRowNotFound();