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c# - 如何根据C#中的另一个属性值获取XML节点的属性值

问题描述

这是 XML：

     <MatML_Doc>
        <Material>
           <BulkDetails>
               <Name>ABS</Name>
               <Class> <Name>PLASTIC</Name></Class>
               <Subclass> <Name>ABS Polymer</Name></Subclass>
               <PropertyData property="Material_Type">
                   <Data format="string">IsotropicMaterial</Data>
               </PropertyData>
               <PropertyData property="Version">
                   <Data format="string">4.0</Data>
               </PropertyData>
               <PropertyData property="Category">
                   <Data format="string">PLASTIC</Data>
               </PropertyData>      
               <PropertyData property="CoatingsStudioMaterialName">
                 <Data format="string">ABS Plastic</Data>
               </PropertyData>
               <PropertyData property="CoatingsVisualizationColor">
                 <Data format="exponential">168, 168, 168</Data>
               </PropertyData>
               <PropertyData property="ColorID">
                 <Data format="integer">87</Data>
               </PropertyData>
           </BulkDetails>
        </Material>
   <MatML_Doc>

如果节点“Name”的值为 ABS，我想获取数据属性“ColorID”的值（我想要数字 87）。通常的程序是什么？

我在这里添加我的解决方案：

private static int GetColorIdInXmlByMaterial(string material, XmlDocument doc)
 {
    XmlElement element = doc.DocumentElement;
    XmlNodeList xmlNodeList = element.SelectNodes("//BulkDetails");

    foreach(XmlNode node in xmlNodeList)
    {
        if (node["Name"].InnerText.Equals(material))
        {
            return Convert.ToInt32(node["ColorID"].InnerText);
        }
    }
    return 0;
 }

标签： c#.netxmldom

解决方案

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);

            List<Material> meterials = doc.Descendants("Material").Select(x => new Material()
            {
                name = (string)x.Descendants("Name").FirstOrDefault(),
                className = (string)x.Descendants("Class").FirstOrDefault().Element("Name"),
                properties = x.Descendants("PropertyData").Select(y => new Property()
                {
                    property = (string)y.Attribute("property"),
                    format = (string)y.Element("Data").Attribute("format"),
                    value = (string)y.Element("Data")
                }).ToList()
            }).ToList();

            Dictionary<string, Material> dict = materials.GroupBy(x => x.name, y => y)
                .ToDictionary(x => x.Key, y => y.FirstOrDefault());

            Material lookup = dict["ABS"];
        }
    }
    public class Material
    {
        public string name { get; set; }
        public string className { get; set; }
        public List<Property> properties { get; set; }
    }
    public class Property
    {
        public string property { get; set; }
        public string format { get; set; }
        public string value { get; set; }
    }
}

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