从DataTable写入时如何指定XML输出的格式？

using System;
using System.Data;
using System.IO;
using System.Xml;

class Program
{
    static void Main()
    {
        // 创建一个DataTable对象
        DataTable table = new DataTable("MyTable");

        // 添加列
        table.Columns.Add("Column1", typeof(string));
        table.Columns.Add("Column2", typeof(int));

        // 添加行
        table.Rows.Add("Row1", 1);
        table.Rows.Add("Row2", 2);

        // 创建一个DataSet对象
        DataSet dataSet = new DataSet();

        // 将DataTable添加到DataSet中
        dataSet.Tables.Add(table);

        // 设置XML格式的属性
        XmlWriterSettings settings = new XmlWriterSettings();
        settings.Indent = true;
        settings.Encoding = System.Text.Encoding.UTF8;

        // 创建一个XML文件
        using (XmlWriter writer = XmlWriter.Create("output.xml", settings))
        {
            // 将DataSet写入XML文件
            dataSet.WriteXml(writer);
        }
    }
}

using (XmlWriter writer = XmlWriter.Create("output.xml", settings))
{
    dataSet.WriteXml(writer, XmlWriteMode.WriteSchema);
}