•  .NET Framework : 4.7.2
•        IDE : Visual Studio Community 2019
•         OS : Windows 10 x64
•     typesetting : Markdown
•         blog : blog.csdn.net/yushaopu
•        github : github.com/GratefulHeartCoder

xml file

<?xml version="1.0" encoding="utf-8"?>
<cultures>
  <taoists count="100" comment="good-t">
    <book>
      <name>The Scripture of Ethics</name>
      <author>Lao Tzu</author>
    </book>
    <book>
      <name>Wen Cheng Jing Jing</name>
      <author>Guan Yin Zi</author>
    </book>
  </taoists>
  <buddhism count="321" comment="good-d">
    <book>
      <name>Diamond Sutras</name>
      <author>Shakya Muni</author>
    </book>
    <book>
      <name>Platform Sutra</name>
      <author>Hui Neng</author>
    </book>
  </buddhism>
</cultures>

code

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

namespace ConsoleApp
{

    class Program
    {
        static void Main(string[] args)
        {
            // The format of xml file must be correct
            XDocument file = XDocument.Load("MyXMLFile.xml");

            // Get the root node of the xml file
            XElement xle = file.Root;

            IEnumerable<XElement> ixt = xle.Elements();

            foreach (var item in ixt)
            {
                Console.WriteLine(item.Name);
            }

            Console.ReadKey();
        }
    }
}

result

taoists
buddhism

resource

• [document] docs.microsoft.com/zh-cn/dotnet/csharp
• [Specification] github.com/dotnet/docs/tree/master/docs/standard/design-guidelines
• [document XML] www.w3school.com.cn/x.asp
• [document XML] www.runoob.com/xml/xml-tutorial.html
• [source code] referencesource.microsoft.com
• [platform] www.csdn.net
• [ IDE ] visualstudio.microsoft.com/zh-hans
• [.NET Core] dotnet.github.io

I'm grateful to those who have helped me.
XML, DTD, XML schema, XSL, SVG can be understood properly.
C. excellent, worth learning. . NET Core has the ability of cross platform, which is worthy of attention.
Console，WinForm，WPF，ASP.NET , Azure WebJob, WCF, Unity3d, UWP can be properly understood.
Note: This is a self-study note, the quality of the inferior, so think twice before you go. When a novice comes here, he can't copy it. He should first study its image number, and when he can change it, he will naturally jump out of the pit.