react怎么隐藏按钮

import React, { Component } from 'react';
import '../../../style_css/antd.css';
import { Layout,Icon,Row, Col} from 'antd';
class Index extends Component {
    // 状态机
    constructor(props, context) {
        super(props, context);
        this.state = {
            display_name: 'none', //此状态机为display的取值
        }
    }
    display_name() { //编辑按钮的单击事件，修改状态机display_name的取值
        if (this.state.display_name == 'none') {
            this.setState({
                display_name: 'block',
            })
        }
        else if (this.state.display_name == 'block') {
            this.setState({
                display_name: 'none',
            })

        }
    }
    render() {
        return (
            <Layout>
                {}
                <div style={{ background: '#fff', paddingTop: '20px', display: this.state.display_name }}>    {}
                    <Row>
                        <Col span={12}>
                        </Col>
                        <Col span={12}>
                            <div style={{ float: 'right' }}>
                                <span style={{ paddingLeft: '5px' }}><Button style={buttoncolor} size="large">详情</Button> </span>
                                <span style={{ paddingLeft: '5px' }}><Button style={buttoncolor} size="large">添加</Button></span>
                                <span style={{ paddingLeft: '5px' }}><Button style={buttoncolor} size="large">修改</Button></span>
                                <span style={{ paddingLeft: '5px' }}><Button style={buttoncolor} size="large" >删除</Button></span>
                                <span style={{ paddingLeft: '5px', paddingRight: '10px' }}><Button style={buttoncolor} size="large">查看关联</Button></span>
                            </div>
                        </Col>
                    </Row>
                </div>
                {}
                <div style={{ background: '#fff', paddingTop: '10px' }}>
                    <Row>
                        <Col span={23}>
                        </Col>
                        <Col span={1} onClick={this.display_name.bind(this)}> {}
                            <Icon type='edit' style={{ fontSize: '30px' }} />
                        </Col>
                    </Row>
                </div>
                {}
                <Layout style={{ padding: '10px 0', background: '#fff' }}>
                    <Content style={{ padding: '0 24px', minHeight: 280 }}>
                        {this.props.children}
                    </Content>
                </Layout>
            </Layout>
        );
    }
}
export default Index;