c# - 从 xml 检索数据的问题

Question

所以我试图从这个 xml 文件中检索订阅者计数，但我在获取数据时遇到了问题。目前我在每个级别都使用 doc.DocumentElement.SelectSingleNode 但我运气不佳，而且由于我对 C# xml 不太熟悉，所以我真的不知道我的问题是什么。任何帮助将不胜感激，xml附在下面。

我正在尝试从subscriberCount 获取数据，并且我当前的代码附在底部，尽管它不起作用

-最大限度

<?xml version="1.0" encoding="UTF-8"?>
<Root>
   <kind>youtube#channelListResponse</kind>
   <etag>"xxx"</etag>
   <pageInfo>
      <totalResults>1</totalResults>
      <resultsPerPage>1</resultsPerPage>
   </pageInfo>
   <items>
      <kind>youtube#channel</kind>
      <etag>"xxx"</etag>
      <id>xxx</id>
      <statistics>
         <viewCount>0</viewCount>
         <commentCount>0</commentCount>
         <subscriberCount>200</subscriberCount>
         <hiddenSubscriberCount>false</hiddenSubscriberCount>
         <videoCount>5</videoCount>
      </statistics>
   </items>
</Root>


string totalSubs = doc.DocumentElement.SelectSingleNode("Root").SelectSingleNode("items").SelectSingleNode("statistics").SelectSingleNode("subscriberCount").Value;

标签： c#xml

Answer 1

使用 xml linq：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Xml;
using System.Xml.Linq;

namespace ConsoleApplication1
{
    class Program
    {
        const string FILENAME = @"c:\temp\test.xml";

        static void Main(string[] args)
        {
            XDocument doc = XDocument.Load(FILENAME);
            XElement root = doc.Root;

            Response response = new Response();
            response.kind = (string)root.Element("kind");
            response.etag = (string)root.Element("etag");
            response.totalResults  = (int)root.Descendants("totalResults").FirstOrDefault();
            response.resultsPerPage = (int)root.Descendants("resultsPerPage").FirstOrDefault();

            XElement items = root.Element("items");
            response.itemKind = (string)items.Element("kind");
            response.itemEtag = (string)items.Element("etag");
            response.id = (string)items.Element("id");

            XElement statistics = items.Element("statistics");
            response.viewCount = (int)statistics.Element("viewCount");
            response.commentCount = (int)statistics.Element("commentCount");
            response.subscriberCount = (int)statistics.Element("subscriberCount");
            response.hiddenSubscriberCount = (Boolean)statistics.Element("hiddenSubscriberCount");
            response.videoCount = (int)statistics.Element("videoCount");
        }
    }
    public class Response
    {
        public string kind { get; set; }
        public string etag { get; set; }
        public int totalResults { get; set; }
        public int resultsPerPage { get; set; }

        public string itemKind { get; set; }
        public string itemEtag { get; set; }
        public string id { get; set; }
        public int viewCount { get; set; }
        public int commentCount { get; set; }
        public int subscriberCount { get; set; }
        public Boolean hiddenSubscriberCount { get; set; }
        public int videoCount { get; set; }

    }
}