XML循环遍历C ++ / CLI中的所有子级和子级

此刻，我正在使用XML来创建一个包含许多问题的数据结构，以用于包含测验的信息，例如问题本身，答案等信息，然后将这些问题放入变量中以在标签中显示。这是XML文件的示例：

<?xml version="1.0" encoding="utf-8"?>
<questionData>
    <question>
    <level> 1 </level>
    <ref> ref1 </ref>
    <questionText>This is a test question using XML!</questionText>
    <A>This is A using XML!</A>
    <B>This is B using XML!</B>
    <C>This is C using XML!</C>
    <D>This is D using XML!</D>
    <corrAnswer> A </corrAnswer>
    <APerc> 97 </APerc>
    <BPerc> 1 </BPerc>
    <CPerc> 1 </CPerc>
    <DPerc> 1 </DPerc>
    <PAFAnswer> A </PAFAnswer>
    <PAFFeeling> Sure </PAFFeeling>
    <FF> B </FF>
    <FFcorrPerc> 100 </FFcorrPerc>
    <FFwrongPerc> 0 </FFwrongPerc>
    <FFPAFAnswer> A </FFPAFAnswer>
    <FFPAFFeeling> Sure </FFPAFFeeling>
    <EXP> This is a test explanation for the info box. </EXP>
    <pronuns> pro-nun-cee-a-sh-un </pronuns>
    </question>

    <question>
    <level> 2 </level>
    <ref> ref2 </ref>
    <questionText>This is another test question using XML!</questionText>
    <A>This is A2 using XML!</A>
    <B>This is B2 using XML!</B>
    <C>This is C2 using XML!</C>
    <D>This is D2 using XML!</D>
    <corrAnswer> B </corrAnswer>
    <APerc> 96 </APerc>
    <BPerc> 1 </BPerc>
    <CPerc> 1 </CPerc>
    <DPerc> 2 </DPerc>
    <PAFAnswer> B </PAFAnswer>
    <PAFFeeling> Sure </PAFFeeling>
    <FF> A </FF>
    <FFcorrPerc> 100 </FFcorrPerc>
    <FFwrongPerc> 0 </FFwrongPerc>
    <FFPAFAnswer> B </FFPAFAnswer>
    <FFPAFFeeling> Sure </FFPAFFeeling>
    <EXP> This is another test explanation for the info box. </EXP>
    <pronuns> pro-nun-cee-a-sh-un two </pronuns>
    </question>
</questionData>

现在，我打算在此文件中包含很多问题。但是，您的测验越深入，难度就越大，因此，我加入了一个称为关卡的元素，并带有一个数字，该数字与被问到的时间相对应（例如，您在测验中有15个问题，您正在质疑3，因此它将XML文件解析为级别元素为3的问题，然后将数据加载到程序中。

但是，有一个问题-最有可能是逻辑错误。在C ++ / CLI代码中，我有以下内容：

         XmlTextReader^ dataFromQFile = gcnew XmlTextReader("Millionaire\\questionsData.xml");
         XmlDocument^ questionsData = gcnew XmlDocument();
         questionsData->Load("Millionaire\\questionsData.xml");
         XmlElement^ root = questionsData->DocumentElement;
         XmlNodeList^ listOfQuestions = root->GetElementsByTagName("questionData");
         XmlNodeList^ Questions = root->GetElementsByTagName("question");

         for each (Questions in listOfQuestions)
         {
             levelFromXML = (root->GetElementsByTagName("level"))->Item(0)->InnerText;
             questionFromXML = (root->GetElementsByTagName("questionText"))->Item(0)->InnerText;
             AFromXML = (root->GetElementsByTagName("A"))->Item(0)->InnerText;
             BFromXML = (root->GetElementsByTagName("B"))->Item(0)->InnerText;
             CFromXML = (root->GetElementsByTagName("C"))->Item(0)->InnerText;
             DFromXML = (root->GetElementsByTagName("D"))->Item(0)->InnerText;
             corrFromXML = (root->GetElementsByTagName("corrAnswer"))->Item(0)->InnerText;
             APercFromXML = (root->GetElementsByTagName("APerc"))->Item(0)->InnerText;
             BPercFromXML = (root->GetElementsByTagName("BPerc"))->Item(0)->InnerText;
             CPercFromXML = (root->GetElementsByTagName("CPerc"))->Item(0)->InnerText;
             DPercFromXML = (root->GetElementsByTagName("DPerc"))->Item(0)->InnerText;
             phoneAnswerFromXML = (root->GetElementsByTagName("PAFAnswer"))->Item(0)->InnerText;
             phoneFeelingFromXML = (root->GetElementsByTagName("PAFFeeling"))->Item(0)->InnerText;
             fiftyAnswer = (root->GetElementsByTagName("FF"))->Item(0)->InnerText;
             fiftyCorrPerc = (root->GetElementsByTagName("FFcorrPerc"))->Item(0)->InnerText;
             fiftyWrongPerc = (root->GetElementsByTagName("FFwrongPerc"))->Item(0)->InnerText;
             fiftyPhoneAnswer = (root->GetElementsByTagName("FFPAFAnswer"))->Item(0)->InnerText;
             fiftyPhoneFeeling = (root->GetElementsByTagName("FFPAFFeeling"))->Item(0)->InnerText;
             exp = (root->GetElementsByTagName("EXP"))->Item(0)->InnerText;
             pronuns = (root->GetElementsByTagName("pronuns"))->Item(0)->InnerText;
         }

当我尝试遍历问题列表时（questionData是父级，问题是子级，而问题中包含的所有数据是子级子），当我尝试在标签中显示变量时，我什么都没有得到，因此使我相信我在循环中犯了一个逻辑错误。我对XML相对较新，因此无法发现错误。你们中的任何人都可以帮助我，或者可能知道更有效的方法来执行上述任务吗？谢谢。