如何选择 <a> 标签 HtmlAgilityPack

Question

这是我尝试选择的屏幕截图，我从控制台复制了 Xpath，但是当我运行程序时，它指出它是 null:Anchor tag。

我尝试将 Xpath 复制到标签以及它上面的标签，它们都返回一个空值，但是当我在浏览器中运行查询并检查页面时，它们都有一个值。

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using HtmlAgilityPack;

namespace AccessID2
{
public partial class Form1 : Form
{
    public Form1()
    {
        InitializeComponent();
    }

    private void textBox1_TextChanged(object sender, EventArgs e)
    {

    }

    #region UI Event Handlers
    private void cmdGo_Click(object sender, EventArgs e)
    {
        RestClient rClient = new RestClient();
        rClient.endPoint = txtUrl.Text;

        debugOutput("Searching for Product");

        string strResponse = string.Empty;

        strResponse = rClient.makeRequest();
        debugOutput(strResponse);

        var html = strResponse;

        var htmlDoc = new HtmlAgilityPack.HtmlDocument();
        htmlDoc.LoadHtml(html);

        var htmlNodes = htmlDoc.DocumentNode.SelectNodes("//*[@id='anch_114']");

        txtID.Text = htmlNodes.ToString();
    }

    #endregion

    private void debugOutput(string strDebugText)
    {
        try
        {
            System.Diagnostics.Debug.Write(strDebugText + Environment.NewLine);
            txtResponse.Text = txtResponse.Text + strDebugText + Environment.NewLine;
            txtResponse.SelectionStart = txtResponse.TextLength;
            txtResponse.ScrollToCaret();
        }
        catch (Exception ex)
        {
            System.Diagnostics.Debug.Write(ex.Message, ToString() + Environment.NewLine);
        }
    }

   

    private void label3_Click(object sender, EventArgs e)
    {

    }
}
}

Answer 1

只需选择锚元素：

var htmlNodes = htmlDoc.DocumentNode.SelectNodes("//a[@id='anch_114']");