想要从列表中的 C# 中的 XML 中获取值

Question

实际上我想从列表中的 C# 中的 XML 中获取值。 有一些特定条件之类的。 我需要在我想获取名称的属性中显示 ruleid、dataprovider，在需要获取 value(20)、operator(greaterthan or lessthan) 类型 =“Healthy”的条件下。

我附上了示例 XML 的图像。

我尝试以下列方式解析数据：

public static void readXml()
    {
        XmlDocument xmldoc = new XmlDocument();
        XmlNodeList xmlnode;
        int i = 0;
        List<Rule> listx = new List<Rule>();

        FileStream fs = new FileStream("C://ConsoleApplication1//sample_manifest.xml", FileMode.Open, FileAccess.Read);
        xmldoc.Load(fs);
        xmlnode = xmldoc.GetElementsByTagName("attribute", "condition");
         XmlNodeList list = xmldoc.SelectNodes(@"/psmsmanifiest/rules/rule/attributes");

         foreach (XmlNode node in list)
        {
            foreach (XmlNode childNode in node.ChildNodes)
            {

                //string dataprovider = node["Dataprovider"].Attributes.Item(0);
                var attribute = node["attribute"].InnerXml;
                Console.WriteLine(attribute);
                Console.ReadLine();

         }
        }
    }

Answer 1

试试下面的代码。 我修复了 xml 标签属性。

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

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            string input =
                "<psmsmanifiest version=\"2\" lastmodified=\"2015-08-06 03:53:06.207\">" +
                  "<rules>" +
                    "<!--sample for runtime data provider-->" +
                    "<rule ruleid=\"8504dcad-f748-4add-9e95-239d5382f1c6\" dataprovider=\"runtime\">" +
                      "<attributes>" +
                        "<attribute name=\"platform.attibute1.value\" type=\"int\">" +
                          "<conditions>" +
                            "<condition type=\"healthy\" operator=\"greaterthan\">100></condition>" +
                            "<condition type=\"unhealthy\" operator=\"greaterthanequal\">100></condition>" +
                          "</conditions>" +
                        "</attribute>" +
                        "<attribute name=\"platform.attibute2.value\" type=\"int\">" +
                          "<conditions>" +
                            "<condition type=\"healthy\" operator=\"greaterthan\">100></condition>" +
                            "<condition type=\"unhealthy\" operator=\"greaterthanequal\">100></condition>" +
                          "</conditions>" +
                        "</attribute>" +
                      "</attributes>" +
                    "</rule>" +
                  "</rules>" +
                "</psmsmanifiest>";

            XDocument doc = XDocument.Parse(input);
            var results = doc.Descendants("rule").Select(x => new
            {
                ruleid = x.Attribute("ruleid").Value,
                dataprovider = x.Attribute("dataprovider").Value,
                attributes = x.Descendants("attribute").Select(y => new
                {
                    name = y.Attribute("name").Value,
                    conditions = y.Descendants("condition").Select(z => new
                    {
                        _type = z.Attribute("type").Value,
                        _operator = z.Attribute("operator").Value,
                        _value = z.Value
                    }).ToList()
                }).ToList()
            }).ToList();
        }
    }
}
​