我想将列表中的选中值存储在数组中,但结果不正确

onClickHandler = (e, DeptId, DeptName) => {
  let selectedDepartment = [];
  selectedDepartment.push(DeptName);
  console.log("selectedDepartment----", selectedDepartment);
  this.setState({
    isChecked: !this.state.isChecked
  });
};

departmentData() {
let departmentList = this.props.departmentData.departments || [];
return departmentList.map((departmentName, index) => {
  return (
    <li className="row" key={index}>
      <div className="col-12 dep-list">
        <div className="row">
          <div className="col-md-9">
            <div
              className="user-name"
              title={departmentName.departmentName}
            >
              {departmentName.departmentName}
            </div>
          </div>
          <div className="col-md-3 mt-rd-btn">
             <RadioButton
                // checked={this.state.isChecked}
                id={departmentName.dObjectId}
                type="radio"
                name={departmentName.departmentName}
                value={departmentName.departmentName}
                onClick={e =>
                  this.onClickHandler(
                    e,
                    departmentName.dObjectId,
                    departmentName.departmentName
                  )
                }
              />
            </div>
          </div>
        </div>
     </li>
    );
  });
}

先谢谢你。帮我拿这个