get refs antd组件如何选择antd的值?

我使用新的参考方法 https://reactjs.org/docs/refs-and-the-dom.html

this.myRef = React.createRef();

当它应该像:

rend(){
                    <Select style={{ width: 200 }} ref={this.myRef}>
                    {Object.entries(this.state.catedict)
                        .map(en => <Option key={en[0]}>{en[1]}</Option>)}
                </Select>
}

但当我想得到输入值或选择

我试着:

console.log(this.myRef.current.value);

我甚至发现:

console.log(this.myRef.current);

结果是:

t {props: {…}, context: {…}, refs: {…}, updater: {…}, saveSelect: ƒ, …}
context: {}
props: {style: {…}, children: Array(2), prefixCls: "ant-select", showSearch: false, transitionName: "slide-up", …}
rcSelect: t {props: {…}, context: {…}, refs: {…}, updater: {…}, onInputChange: ƒ, …}
refs: {}
renderSelect: ƒ (n)
saveSelect: ƒ (n)
state: null
updater: {isMounted: ƒ, enqueueSetState: ƒ, enqueueReplaceState: ƒ, enqueueForceUpdate: ƒ}
_reactInternalFiber: Na {tag: 2, key: null, type: ƒ, stateNode: t, return: Na, …}
__proto__: v