如何从之前构建一个使用数据一个XmlReader或XPathDocument的基于XML的数据源中删除无效的十六进制字符？

using System;
using System.IO;
using System.Text.RegularExpressions;
using System.Xml;

public class RemoveInvalidHexChars
{
    public static void Main()
    {
        string inputXml = "<root><data>0x1234 0xABCD 0xXYZ</data></root>";

        XmlReaderSettings settings = new XmlReaderSettings();
        settings.ConformanceLevel = ConformanceLevel.Fragment;

        using (StringReader stringReader = new StringReader(inputXml))
        using (XmlReader xmlReader = XmlReader.Create(stringReader, settings))
        {
            xmlReader.Read();
            string cleanedData = RemoveInvalidHexCharsFromXml(xmlReader);
            Console.WriteLine(cleanedData);
        }
    }

    private static string RemoveInvalidHexCharsFromXml(XmlReader xmlReader)
    {
        string data = xmlReader.ReadElementContentAsString();
        string hexPattern = @"0x[0-9A-Fa-f]+";
        string cleanedData = Regex.Replace(data, hexPattern, m => IsValidHex(m.Value) ? m.Value : "");
        return cleanedData;
    }

    private static bool IsValidHex(string hexValue)
    {
        string hexPattern = @"0x[0-9A-Fa-f]+";
        return Regex.IsMatch(hexValue, hexPattern);
    }
}