如何在Unity里用C#编写XML文件？

Question

谁能帮帮我，这太让我头疼了！网上还没有人能很好地解释我的问题。
我所需要的是：我需要有个人来解释怎样在Unity中创建XML文件。人们告诉我去看看stream writer。我搜了一下，但是没有人给出教程。我也不知道.NET是什么，所以不要再回答我这个了。我已经看微软页关于XML文件的信息，也没有找到正确的解决方法。这是我想要找的：
我想要写出这样的东西：

<Player>

    <Level>5<\Level>  
    <Health>500<\Health>  

<\Player>

我怎样才能制作出这样的文件并且导入到Unity里？怎样才能让Unity读取这个文件，并像这样从某些东西里抽取信息？我对.NET和XML完全不懂。

原问题：How to write an XML file in C# in Unity?

Answer 1

@Pragmateek:
假设你有这样的 Player class:

[XmlRoot]
public class Player
{
    [XmlElement]
    public int Level { get; set; }

    [XmlElement]
    public int Health { get; set; }
}

这是让你开始的完整过程：

XmlSerializer xmls = new XmlSerializer(typeof(Player));

StringWriter sw = new StringWriter();
xmls.Serialize(sw, new Player { Level = 5, Health = 500 });
string xml = sw.ToString();

Player player = xmls.Deserialize(new StringReader(xml)) as Player;
xml is:
<?xml version="1.0" encoding="utf-16"?>
<Player xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
  <Level>5</Level>
  <Health>500</Health>
</Player>

player 和我们序列化的原始对象完全一样。
如果你想从文件序列化或反序列化，你可以这样做：

using (var stream = File.OpenWrite("my_player.xml"))
{
    xmls.Serialize(stream, new Player { Level = 5, Health = 500 });
}

Player player = null;
using (var stream = File.OpenRead("my_player.xml"))
{
    player = xmls.Deserialize(stream) as Player;
}

EDIT:
如果你想要完全展现XML：

XmlSerializer xmls = new XmlSerializer(typeof(Player));

XmlSerializerNamespaces ns = new XmlSerializerNamespaces();
ns.Add("", "");
XmlWriterSettings settings = new XmlWriterSettings { OmitXmlDeclaration = true, Indent = true };
using (var stream = File.OpenWrite("my_player.xml"))
{
    using (var xmlWriter = XmlWriter.Create(stream, settings))
    {
        xmls.Serialize(xmlWriter, new Player { Level = 5, Health = 500 }, ns);
    }
}

Player player = null;
using (var stream = File.OpenRead("my_player.xml"))
{
    player = xmls.Deserialize(stream) as Player;
}

Answer 2

一句话，使用XmlDocument，但是你连.NET都不知道是什么，那你咋用Unity?