Question

是否可以将xml文件分配给struct？

我有xml文件：

<?xml version="1.0" encoding="utf-8" ?>
<Questions> 
 <Question id="1">
     <QuestionText>Question 1?</QuestionText>
       <Ans1>Answer</Ans1>
       <Ans2>Answer</Ans2>
       <Ans3>Answer</Ans3>
       <Ans4>Answer</Ans4>
       <CorrectAnswer>2</CorrectAnswer>
     </Question>
  <Question id="2">
    <QuestionText>Question 2?</QuestionText>
      <Ans1>Answer</Ans1>
      <Ans2>Answer</Ans2>
      <Ans3>Answer</Ans3>
      <Ans4>Answer</Ans4>
    <CorrectAnswer>1</CorrectAnswer>
  </Question>
</Questions>

和c＃代码

public struct Question
    {
        public string questionText;
        public string[] answers;
        public int correctAnswerIndex;
        public Question(string questionText, string[] answers, int correctAnswerIndex)
        {
            this.questionText = questionText;
            this.answers = answers;
            this.correctAnswerIndex = correctAnswerIndex;
        }
    }

我想用id创建一个新问题foreach xml Question，并分配问题文本从xml到我的questionText来自struct，struct answers = Ans1,2,3,4，而correctAnswerIndex将是来自xml的正确答案。我会很感激你的每一个建议。

Answer 1

您可以使用XML架构定义工具（Xsd.exe）从XML文件自动生成C＃类，并使用反序列化将XML中的数据直接读入C＃对象

步骤：

使用Xsd.exe
从xml文件生成xsd模式文件
```
xsd Questions.xml /outputdir:C:\myDir  
```

这将生成目录C：\ myDir

下的Questions.xsd

使用相同的Xsd.exe从生成的xsd文件生成c＃类
```
xsd Questions.xsd /classes /outputdir:C:\myDir   
```

这将生成目录C：\ myDir

下的Questions.cs

使用反序列化从XML读入C＃对象

string XmlPath = @"C:\myDir\Questions.xml";
YourQuestionClass qObj = null;
XmlSerializer serializer = new XmlSerializer(typeof(YourQuestionClass));
StreamReader reader = new StreamReader(XmlPath);
qObj = (QuestionClass)serializer.Deserialize(reader);
reader.Close();

Answer 2

是的，System.Xml.Serialization是你的朋友。但是，如果您的类具有与XML相同的结构，那么它最有效。

using System.Xml.Serialization;

public class Question
{
    [XmlElement("QuestionText")]
    public string QuestionText {get;set;}
    [XmlElement("Answer")]
    public string[] Answer {get;set;}
    [XmlElement("CorrectAnswer")]
    public string CorrectAnswer {get;set;}
}
[XmlRoot("Questions")
public class Questions
{
    [XmlElement("Question")]
    public Question[] Question {get;set;}
}

或者如果你总是有4个可能的答案你也可以这样

public class Question
{
    [XmlElement("QuestionText")]
    public string QuestionText {get;set;}
    [XmlElement("Ans1")]
    public string Answer1 {get;set;}
    [XmlElement("Ans2")]
    public string Answer2 {get;set;}
    [XmlElement("Ans3")]
    public string Answer3 {get;set;}
    [XmlElement("Ans4")]
    public string Answer4 {get;set;}
    [XmlElement("CorrectAnswer")]
    public string CorrectAnswer {get;set;}
}
[XmlRoot("Questions")
public class Questions
{
    [XmlElement("Question")]
    public Question[] Question {get;set;}
}

在

之后反序列化很容易

Questions questions = null;
XmlSerializer xmlSerializer = new XmlSerializer(typeof(Questions));
XmlDocument xmlDoc = new XmlDocument();
xmlDoc.Load(yourPathToFile);

string xmlString = xmlXrds.OuterXml.ToString();
byte[] buffer = ASCIIEncoding.UTF8.GetBytes(xmlString);
MemoryStream ms = new MemoryStream(buffer);

using (XmlReader reader = XmlReader.Create(ms))
{
   questions= (Questions)xmlSerializer.Deserialize(reader);
}

或者你可以马上获得它

StreamReader reader = new StreamReader(yourXmlPath);
questions = (Questions)serializer.Deserialize(reader);

希望有所帮助

将xml分配给c＃struct

2 个答案: