在c#中使用htmllagilitypack解析html

本文关键字：htmllagilitypack 解析 html | 更新日期: 2023-09-27 18:17:20

WebClient webClient = new WebClient();
string page = webClient.DownloadString(
    "http://www.deu.edu.tr/DEUWeb/Guncel/v2_index_cron.html");
HtmlAgilityPack.HtmlDocument doc = new HtmlAgilityPack.HtmlDocument();
doc.LoadHtml(page);

我想解析上面给出的页面，但我想获得表的行信息。我试着用几个例子来做，但我做不到。任何建议

例如，您可以这样解析行:

using System.Net;
using HtmlAgilityPack;
namespace ConsoleApplication5
{
    class Program
    {
        static void Main(string[] args)
        {
            WebClient webClient = new WebClient();
            string page = webClient.DownloadString("http://www.deu.edu.tr/DEUWeb/Guncel/v2_index_cron.html");
            HtmlDocument doc = new HtmlDocument();
            doc.LoadHtml(page);
            HtmlNode table = doc.DocumentNode.SelectSingleNode("//table");
            foreach (var cell in table.SelectNodes("tr/td"))
            {
                string someVariable = cell.InnerText;
            }
        }
    }
}

为了完整起见，使用LINQ可以很容易地创建一个包含所有非空行值的枚举:

    private static void Main(string[] args)
    {
        WebClient webClient = new WebClient();
        string page = webClient.DownloadString("http://www.deu.edu.tr/DEUWeb/Guncel/v2_index_cron.html");
        HtmlDocument doc = new HtmlDocument();
        doc.LoadHtml(page);
        HtmlNode table = doc.DocumentNode.SelectSingleNode("//table");
        var rows = table.SelectNodes("tr/td").Select(cell => cell.InnerText).Where(someVariable => !String.IsNullOrWhiteSpace(someVariable)).ToList();
    }

下面是枚举所有表格单元格并将每个单元格的内部文本写入控制台的示例

WebClient webClient = new WebClient();
var page = webClient.DownloadString("http://www.deu.edu.tr/DEUWeb/Guncel/v2_index_cron.html");
HtmlAgilityPack.HtmlDocument doc = new HtmlAgilityPack.HtmlDocument();
doc.LoadHtml(page);
foreach (var td in doc.DocumentNode.SelectNodes("//table/tr/td"))
{
    Console.WriteLine(td.InnerText);
}