Question

我正在尝试从以下XML字符串中提取：url,ttype,tempTnxId,token,txnStage的值：

 <?xml version="1.0" encoding="UTF-8"?>
    <MMP>
       <MERCHANT>
          <RESPONSE>
             <url>https://payment.xyz.com/paynetz/epi/fts</url>
             <param name="ttype">abc</param>
             <param name="tempTxnId">12319507</param>
             <param name="token">x5H9RrhgfXvamaqEl6GpY4uCoXHN%2FlEm%2BUpaaKuMQus%3D</param>
             <param name="txnStage">1</param>
          </RESPONSE>
       </MERCHANT>
    </MMP>

到目前为止，我只能使用以下代码提取索引值：

 foreach (XmlNode node in doc.SelectNodes("/MMP/MERCHANT/RESPONSE/param"))
 {   
   string tempTxnId= doc.SelectNodes("/MMP/MERCHANT/RESPONSE/param")[1].InnerText;//only works with index and not name
 }

/MMP/MERCHANT/RESPONSE/param或/MMP/MERCHANT/RESPONSE/ttype不会返回任何内容。

此解决方案：Getting specified Node values from XML document 似乎不适合我。

XmlDocument doc = new XmlDocument();
doc.LoadXml(xmlstring);
var result = doc.Elements("table"); ///cant find Elements, Element is is not identified by the compiler

Answer 1

您可以按此属性值选择节点（假设您正在尝试这样做）：

        doc.SelectNodes("/MMP/MERCHANT/RESPONSE/param[@name='ttype']")
            .Cast<XmlNode>().ToList()
            .ForEach(x=>Console.WriteLine(x.InnerText));

Answer 2

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);

            var response = doc.Descendants("RESPONSE").Select(x => new {
                url = (string)x.Element("url"),
                ttype = x.Elements().Where(y => (string)y.Attribute("name") == "ttype").Select(z => (string)z).FirstOrDefault(),
                tempTxnId = x.Elements().Where(y => (string)y.Attribute("name") == "tempTxnId").Select(z => (string)z).FirstOrDefault(),
                token = x.Elements().Where(y => (string)y.Attribute("name") == "token").Select(z => (string)z).FirstOrDefault(),
                txnStage = x.Elements().Where(y => (string)y.Attribute("name") == "txnStage").Select(z => (int)z).FirstOrDefault()
            }).FirstOrDefault();


        }
    }
}

Answer 3

您评论过cannot select by name ttype ttype是一个值，而不是一个名字元素名称为param 元素param的单个属性名称为name。

如果您需要获取属性InnerText的{{1}} param等于name（或其他值），那么您可以执行以下操作：< / p>

ttype

无法从C＃中的XML字符串中读取特定字段？

3 个答案: