使用c#查找xml中是否存在代码

using System;
using System.Xml;

public class XmlSearchExample
{
    public static bool IsCodeExistInXml(string xmlFilePath, string code)
    {
        // 创建XmlDocument对象
        XmlDocument xmlDoc = new XmlDocument();

        try
        {
            // 加载XML文件
            xmlDoc.Load(xmlFilePath);

            // 使用XPath表达式查找包含特定代码的节点
            XmlNodeList codeNodes = xmlDoc.SelectNodes("//code[text()='" + code + "']");

            // 如果找到匹配的节点，则存在特定的代码
            if (codeNodes.Count > 0)
            {
                return true;
            }
        }
        catch (Exception ex)
        {
            // 处理异常情况
            Console.WriteLine("Error occurred while searching XML: " + ex.Message);
        }

        return false;
    }

    public static void Main(string[] args)
    {
        string xmlFilePath = "path/to/your/xml/file.xml";
        string codeToSearch = "your_code_here";

        bool isCodeExist = IsCodeExistInXml(xmlFilePath, codeToSearch);

        if (isCodeExist)
        {
            Console.WriteLine("The XML contains the specified code.");
        }
        else
        {
            Console.WriteLine("The XML does not contain the specified code.");
        }
    }
}