I'm a junior developer. 
I use Textfield of material ui, but i have a problem. I get the value by a property, and it works ! however i can't edit the textfield, so i would want to use the onChange parameter, this is my code : 

```
<TextField ref="docLibelle" value={this.props.lastuploadfile.content}  onChange={this._handleTextFieldChange}

```

And my function : 

```
_handleTextFieldChange = (e:any) => {
    this.setState({
        showReferenceIsRequired : false,
        libelDoc: e.target.value
    });
}

```

And I try that : 

```
<TextField ref="docLibelle" value={this.state.libelDoc&& this.props.lastuploadfile.content}  onChange={this._handleTextFieldChange}

```

But it doesn't work .. How can i get the value by the property and edit also the textfield ? 

Thank you for yours answers !