C# 如何使用XPath通过文本查找元素

我下载了HTML文档，我需要通过文本在树中查找元素

片段，仅相关部分

                                    <div class="py-5 col-12">
                                        <h4>Scale</h4>
                                        <div>
                                            <table class="table table-borderless">
                                                <tbody>
                                                    <tr>
                                                        <th style="width: 300px;">Normalized Volume Percentile</th>
                                                        <td>
                                                            86<span style="position: relative; bottom: 1ex; font-size: 80%;">th</span>
                                                        </td>
                                                    </tr>
                                                    <tr>
                                                        <th>Combined Orderbook Percentile</th>
                                                        <td>
                                                            82<span style="position: relative; bottom: 1ex; font-size: 80%;">th</span>
                                                        </td>
                                                    </tr>
                                                </tbody>
                                            </table>
                                        </div>
                                    </div>

例外情况

System.Xml.XPath.XPathException: ''//Normalized Volume Percentile' has an invalid token.'

---

如果要按节点的文本内容定位节点，请尝试

"//th[.='Normalized Volume Percentile']"

要查找

td

：

"//th[.='Normalized Volume Percentile']/following-sibling::td"

"//th[.='Normalized Volume Percentile']/following-sibling::td"