读取多个XML属性

我试图在Visual Studio中使用C＃从XML库（下面的文件）中获取信息。

<buttons>
<measurement>
    <scan id="0" time="20 53 06">
        <q address="40" state="0"/>
        <q address="41" state="0"/>
        <q address="42" state="1"/>
        <q address="43" state="0"/>
        <q address="44" state="1"/>
        <q address="45" state="1"/>
        <q address="46" state="1"/>
        <q address="47" state="1"/>
    </scan>
</measurement>
<measurement>
    <scan id="1" time="20 53 07">
        <q address="40" state="0"/>
        <q address="41" state="0"/>
        <q address="42" state="0"/>
        <q address="43" state="0"/>
        <q address="44" state="1"/>
        <q address="45" state="0"/>
        <q address="46" state="0"/>
        <q address="47" state="0"/>
    </scan>
</measurement>
<measurement>
    <scan id="2" time="20 53 08">
        <q address="40" state="0"/>
        <q address="41" state="1"/>
        <q address="42" state="0"/>
        <q address="43" state="1"/>
        <q address="44" state="1"/>
        <q address="45" state="0"/>
        <q address="46" state="0"/>
        <q address="47" state="1"/>
    </scan>
</measurement>
<measurement>
    <scan id="3" time="20 53 09">
        <q address="40" state="1"/>
        <q address="41" state="0"/>
        <q address="42" state="0"/>
        <q address="43" state="1"/>
        <q address="44" state="1"/>
        <q address="45" state="0"/>
        <q address="46" state="1"/>
        <q address="47" state="0"/>
    </scan>
</measurement>
<measurement>
    <scan id="4" time="20 53 10">
        <q address="40" state="0"/>
        <q address="41" state="0"/>
        <q address="42" state="1"/>
        <q address="43" state="1"/>
        <q address="44" state="1"/>
        <q address="45" state="1"/>
        <q address="46" state="0"/>
        <q address="47" state="0"/>
    </scan>
</measurement>
<measurement>
    <scan id="5" time="20 53 11">
        <q address="40" state="1"/>
        <q address="41" state="1"/>
        <q address="42" state="1"/>
        <q address="43" state="0"/>
        <q address="44" state="0"/>
        <q address="45" state="0"/>
        <q address="46" state="1"/>
        <q address="47" state="0"/>
    </scan>
</measurement>
<measurement>
    <scan id="6" time="20 53 12">
        <q address="40" state="0"/>
        <q address="41" state="1"/>
        <q address="42" state="1"/>
        <q address="43" state="0"/>
        <q address="44" state="0"/>
        <q address="45" state="1"/>
        <q address="46" state="1"/>
        <q address="47" state="1"/>
    </scan>
</measurement>
<measurement>
    <scan id="7" time="20 53 13">
        <q address="40" state="1"/>
        <q address="41" state="1"/>
        <q address="42" state="1"/>
        <q address="43" state="1"/>
        <q address="44" state="1"/>
        <q address="45" state="0"/>
        <q address="46" state="1"/>
        <q address="47" state="1"/>
    </scan>
</measurement>

这是我第一次尝试读取XML文件。

我想做的是：
我要输入ID，程序应该返回数组中的所有q状态。

这是我尝试过的：

using System.Xml;
XmlDocument xmlDoc = new XmlDocument();
xmlDoc.Load("Path to my xml");
XmlNodeList titleNodes = xmlDoc.SelectNodes("//buttons/measurment/scan/q");
foreach(XmlNode titleNode in titleNodes)
    Console.WriteLine(titleNode.Attribute["address"]);
Console.ReadKey();

我知道这段代码只会在控制台中显示一些q属性。我从不发怒，因为它不起作用（控制台窗口中什么都没有出现）。而且我不知道为什么。我只是不了解这个XmlRead，XmlDeocument。我在这里是学习形式：教程。我一直在追踪每一个词干和例子。只有XmlRead对我有用。但是，它只会读取所有内容，而不会读取特定区域。

您能告诉我一些例子或解决方案吗？