打开XML文件并将其转换为UTF-8

我正在尝试打开一个xml文件(ansi)并转换并保存它的UTF-8。

下面是我的代码:

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

class Test
{
public static void Main()
{
    string path = @"C:'test'test.xml";
    string path_new = @"C:'test'test_new.xml";
    try
    {
        XmlTextReader reader = new XmlTextReader(path);        
          XmlWriterSettings settings = new XmlWriterSettings();
                           settings.Encoding = new UTF8Encoding(false);
            using (var writer = XmlWriter.Create(path_new, settings))
            {
                reader.Save(writer);
            }


    }
    catch (Exception e)
    {
        Console.WriteLine("The process failed: {0}", e.ToString());
    }
}
}

我得到一个错误'System.Xml。XmlTextReader'不包含'Save'的定义，也没有扩展方法'Save'接受类型为'System.Xml '的第一个参数。可以找到XmlTextReader'(您是否缺少using指令或程序集引用?)

我错过了什么课?我的代码是否正确完成工作

编辑:

好了，这里另一个代码给出了异常:

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

class Test
{
public static void Main()
{
    string path = @"C:'project'rdsinfo.xml";
    //string path_new = @"C:'project'rdsinfo_new.xml";
    try
    {
        XmlDocument xmlDoc = new XmlDocument();
        xmlDoc.Load(path);

    }
    catch (Exception e)
    {
        Console.WriteLine("The process failed: {0}", e.ToString());
    }
}
}

它给了我一个异常，在给定的编码中无效字符。

string path = @"C:'test'test.xml";
string path_new = @"C:'test'test_new.xml";
Encoding utf8 = new UTF8Encoding(false);
Encoding ansi = Encoding.GetEncoding(1252);
string xml = File.ReadAllText(path, ansi);
XDocument xmlDoc = XDocument.Parse(xml);
File.WriteAllText(
    path_new,
    @"<?xml version=""1.0"" encoding=""utf-8""?>" + xmlDoc.ToString(),
   utf8
);