无法将onClick函数传递到React中的其他文件

import React from 'react';
import ChildComponent from './ChildComponent';

class ParentComponent extends React.Component {
  onClick = () => {
    // 处理点击事件的逻辑
  }

  render() {
    return (
      <div>
        <ChildComponent onClick={this.onClick} />
      </div>
    );
  }
}

export default ParentComponent;

import React from 'react';

class ChildComponent extends React.Component {
  render() {
    return (
      <button onClick={this.props.onClick}>点击按钮</button>
    );
  }
}

export default ChildComponent;

import React from 'react';

const MyContext = React.createContext();

class ParentComponent extends React.Component {
  onClick = () => {
    // 处理点击事件的逻辑
  }

  render() {
    return (
      <div>
        <MyContext.Provider value={this.onClick}>
          <ChildComponent />
        </MyContext.Provider>
      </div>
    );
  }
}

class ChildComponent extends React.Component {
  render() {
    return (
      <MyContext.Consumer>
        {onClick => (
          <button onClick={onClick}>点击按钮</button>
        )}
      </MyContext.Consumer>
    );
  }
}

export default ParentComponent;