C# Xml解析器不'；行不通

嗨，我不能解析xml。我想在文件中写入一些节点值，但结果得到一个空的txt文件。

您需要：

artistNode.InnerText

---

不是：

artistNode.value

第二个块是什么编程语言？

<?xml version="1.0" encoding="utf-8"?>
<response list="true">
  <audio>
    <aid>253663595</aid>
    <artist>Example</artist>
    <duration>389</duration>
    <lyrics_id>57485771</lyrics_id>
    <genre>18</genre>
  </audio>
  <audio>
    <aid>253663595</aid>
    <artist>Example1</artist>
    <duration>400</duration>
    <lyrics_id>57485772</lyrics_id>
    <genre>20</genre>
  </audio>
</response>

XmlDocument allAudio = new XmlDocument();
                     allAudio.Load(@"e:\Audio.xml");
                     StreamWriter write_text = File.CreateText(@"e:\Audio.txt");
                     XmlNodeList audioNodes = allAudio.GetElementsByTagName("audio");
                     foreach (XmlNode audioNode in audioNodes)
                     {
                         XmlNode artistNode = audioNode["artist"];
                         write_text.WriteLine(String.Format("{0}", artistNode.Value));
                     }
                     write_text.Close();