如何使用Xpath读取xml子点头 [英] how to read xml child nod using Xpath

问题描述

请告诉我如何使用Xpath读取以下xml版本的innertext(即"1.0.0.0")

Please tell me how to read version innertext(i.e "1.0.0.0") using Xpath for the below xml

<package>
  <workflowprocesses>
    <workflowprocess>
    </workflowprocess>
    <workflowprocess>
      <activites>
          <activity>
             <version>1.0.0.0</version>
          </activity>
      </activites>
    </workflowprocess>
  </workflowprocesses>
</package>

推荐答案

在此处上有一些出色的XPath教程[ ^ ]，它将向您显示几乎所有您需要了解的内容.

我认为类似这样的方法可能会帮您解决问题；

There are some excellent XPath tutorials over here[^] that''ll show you just about everything you need to know.

I think that something like this might do the trick for you;

using System;
using System.IO;
using System.Xml.XPath;
namespace Sandbox
{
    class Program
    {
        static void Main(string[] args)
        {
            string xml = "<package><workflowprocesses><workflowprocess></workflowprocess><workflowprocess><activites><activity><version>1.0.0.0</version></activity></activites></workflowprocess></workflowprocesses></package>";

            XPathDocument document = new XPathDocument(new StringReader(xml));
            XPathNavigator navigator = document.CreateNavigator();
            XPathNodeIterator versionList = navigator.Select("/package/workflowprocesses/workflowprocess/activites/activity/version");
            foreach (XPathNavigator versionElement in versionList)
            {
                string version = versionElement.Value;
                Console.WriteLine("Version=[{0}]", version);
            }
        }
    }
}

希望这会有所帮助，
Fredrik

Hope this helps,
Fredrik

我不知道您的xml文件中有多少个子节点"workflowprocess"，但是...如果您想在该xml文件中获得"1.0.0.0"，请点击此处是您的XPath:

/package/workflowprocesses/workflowprocess [last()]/activites/activity/version

i don''t know how many child node "workflowprocess" in your xml file, but... if you want to get "1.0.0.0" in that xml file, here is your XPath:

/package/workflowprocesses/workflowprocess[last()]/activites/activity/version

这篇关于如何使用Xpath读取xml子点头的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！