html 在 C# 中使用 HtmlAgilityPack 进行解析

Question

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，但我想获取table的行信息。我试过几个例子，但我做不到。任何建议

Answer 1

下面是枚举所有 table 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);
}

Answer 2

例如，您可以像这样解析行：

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 您可以轻松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();
    }

html 在 C# 中使用 HtmlAgilityPack 进行解析

html parse with HtmlAgilityPack in C#

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c#

asp.net

parsing

html-agility-pack