如何在DataGrid中添加列？

import React from 'react';
import { DataGrid, Column } from 'react-data-grid';

const columns = [
  { key: 'id', name: 'ID', width: 80 },
  { key: 'name', name: 'Name', width: 200 },
  { key: 'age', name: 'Age', width: 80 },
];

const rows = [
  { id: 1, name: 'John Doe', age: 25 },
  { id: 2, name: 'Jane Smith', age: 32 },
  { id: 3, name: 'Bob Johnson', age: 45 },
];

function App() {
  return (
    <DataGrid columns={columns} rows={rows}>
      <Column key="id" name="ID" width={80} />
      <Column key="name" name="Name" width={200} />
      <Column key="age" name="Age" width={80} />
    </DataGrid>
  );
}

export default App;