How to insert a Datarow in the middle of a Datatable

Question

I need to give an Insertat of a Datarow in the middle of a Datatable, but the way I’m always making the error "This line already belongs to another table"

DataTable subpedido = Pedido_FichaTecnicaDAO.PegarInstancia().ConsultarPedidoID(Convert.ToInt32(this.gridPedidos.Rows[e.RowIndex].Cells[1].Value));
DataTable dataTable = (DataTable)gridPedidos.DataSource;
for (int i = 0; i <= subpedido.Rows.Count - 1; i++)
{
    DataRow row = subpedido.Rows[i];
    dataTable.Rows.InsertAt(row, e.RowIndex + 1);
}