基类和继承类的 XML 序列化信息

Question

我正在尝试将 C# 对象序列化为 XML，以便它可以用作 API 调用的主体。他们对所需的输入非常挑剔。我已经构建了以下类来保存我需要发送给他们的数据。包括属性和所有属性作为元素而不是属性。他们还要求列表包含type="array"，尽管创建我自己的类来实现 List 是最简单的，因为我给它们的所有列表都必须具有相同的属性。当发生序列化时，它会序列化 List 项的基类，但它不包括我想要的派生类的属性。

public class CustomArray<T> : List<T>
{
    [XmlAttribute]
    public string type { get; set; } = "array";
}

[XmlRoot("message")]
public class MessageBody
{
    [XmlArray("Checks"), XmlArrayItem("CheckItem")]
    public CustomArray<Check> CheckList { get; set; }
}

public class Check
{
    [XmlElement("C_CHECK_NUMBER")]
    public string CheckNumber { get; set; }

    [XmlElement("C_CHECK_AMOUNT")]
    public decimal Amount { get; set; }

    [XmlArray("InvoiceList"), XmlArrayItem("Invoice")]
    public CustomArray<Invoice> InvoiceList { get; set; }
}

public class Invoice
{
    [XmlElement("C_INVOICE_ID")]
    public long ID { get; set; }

    [XmlElement("C_INVOICE_NUM")]
    public string InvoiceNum { get; set; }
}

然后我运行这段代码：

// Create a sample object
var message = new MessageBody()
{
    CheckList = new CustomArray<Check>
    {
        new Check
        {
            CheckNumber = "111",
            Amount = 1.00M
        },
        new Check
        {
            CheckNumber = "112",
            Amount = 2.00M,
            InvoiceList = new CustomArray<Invoice>
            {
                new Invoice
                {
                    ID = 1,
                    InvoiceNum = "1"
                }
            }
        }
    }
};

// Create custom settings
var settings = new XmlWriterSettings
{
    OmitXmlDeclaration = true,
    Indent = true
};

// Serialize item and print it to console
using (var sw = new StringWriter())
using (var writer = XmlWriter.Create(sw, settings))
{
    var serializer = new XmlSerializer(message.GetType());
    serializer.Serialize(writer, message, new XmlSerializerNamespaces(new[] { XmlQualifiedName.Empty }));
    Console.WriteLine(sw.ToString());
}

我把这个写到控制台：

<message>
  <Checks>
    <CheckItem>
      <C_CHECK_NUMBER>111</C_CHECK_NUMBER>
      <C_CHECK_AMOUNT>1.00</C_CHECK_AMOUNT>
    </CheckItem>
    <CheckItem>
      <C_CHECK_NUMBER>112</C_CHECK_NUMBER>
      <C_CHECK_AMOUNT>2.00</C_CHECK_AMOUNT>
      <InvoiceList>
          <Invoice>
              <C_INVOICE_ID>1</C_INVOICE_ID>
              <C_INVOICE_NUM>1</C_INVOICE_NUM>
          </Invoice>
      </InvoiceList>
    </CheckItem>
  </Checks>
</message>

但我需要得到这个：

<message>
  <Checks type="array">
    <CheckItem>
      <C_CHECK_NUMBER>111</C_CHECK_NUMBER>
      <C_CHECK_AMOUNT>1.00</C_CHECK_AMOUNT>
    </CheckItem>
    <CheckItem>
      <C_CHECK_NUMBER>112</C_CHECK_NUMBER>
      <C_CHECK_AMOUNT>2.00</C_CHECK_AMOUNT>
      <InvoiceList type="array">
          <Invoice>
              <C_INVOICE_ID>1</C_INVOICE_ID>
              <C_INVOICE_NUM>1</C_INVOICE_NUM>
          </Invoice>
      </InvoiceList>
    </CheckItem>
  </Checks>
</message>

感谢您的帮助！

这是我为了炫耀而制作的 dotnetfiddle。这并不准确，但它具有相同的想法。 https://dotnetfiddle.net/ALCX5H

Answer 1

尝试以下：

[XmlRoot("message")]
public class MessageBody
{
    [XmlElement("Checks")]
    public Checks Checks { get; set; }
}
public class Checks
{
    [XmlAttribute]
    public string type { get; set; }

    [XmlElement("Checks")]
    public List<Check> Checks { get; set; }
}

public class Check
{
    [XmlElement("C_CHECK_NUMBER")]
    public string CheckNumber { get; set; }

    [XmlElement("C_CHECK_AMOUNT")]
    public decimal Amount { get; set; }
}