c#xml序列化规定encoding=utf-8

在C#中进行XML序列化时，默认的编码方式是UTF-8。但是，我们也可以通过设置XmlWriterSettings.Encoding属性来指定其他的编码方式。下面是一个示例代码：

using System;
using System.IO;
using System.Xml.Serialization;

public class Person
{
    public string Name { get; set; }
    public int Age { get; set; }
}

public class Program
{
    static void Main(string[] args)
    {
        Person person = new Person { Name = "Alice", Age = 20 };

        XmlSerializer serializer = new XmlSerializer(typeof(Person));

        XmlWriterSettings settings = new XmlWriterSettings();
        settings.Encoding = System.Text.Encoding.UTF32; // 指定编码方式为UTF-32

        using (XmlWriter writer = XmlWriter.Create("person.xml", settings))
        {
            serializer.Serialize(writer, person);
        }
    }
}

在上面的代码中，我们通过设置XmlWriterSettings.Encoding属性来指定编码方式为UTF-32。这样，生成的XML文件就会以UTF-32编码方式保存。