如何在c#中从元素中检索属性值

using System;
using System.Xml;

class Program
{
    static void Main()
    {
        string xmlString = "<root><element attribute=\"value\"/></root>";
        XmlDocument xmlDoc = new XmlDocument();
        xmlDoc.LoadXml(xmlString);

        // 获取根元素下的第一个element元素的attribute属性值
        string attributeValue = xmlDoc.DocumentElement.SelectSingleNode("element").Attributes["attribute"].Value;
        Console.WriteLine(attributeValue); // 输出: value
    }
}

using System;
using System.Xml.Linq;

class Program
{
    static void Main()
    {
        string xmlString = "<root><element attribute=\"value\"/></root>";
        XElement root = XElement.Parse(xmlString);

        // 获取element元素的attribute属性值
        string attributeValue = root.Element("element").Attribute("attribute").Value;
        Console.WriteLine(attributeValue); // 输出: value
    }
}

var attribute = root.Element("element").Attribute("attribute");
if (attribute != null)
{
    string attributeValue = attribute.Value;
    Console.WriteLine(attributeValue);
}
else
{
    Console.WriteLine("Attribute not found.");
}