C#-派生类的XML序列化

本文关键字：XML 序列化 派生 C#- | 更新日期: 2023-09-27 18:29:49

我正在尝试序列化多个元素（供应商、客户、产品等）的列表，这些元素都源自同一类（MasterElement）

public class XMLFile
{
    [XmlArray("MasterFiles")]
    public List<MasterElement> MasterFiles;
    ...
}
[XmlInclude(typeof(Supplier))]
[XmlInclude(typeof(Customer))]
public abstract class MasterElement
{
    public MasterElement() 
    {
    }
}
[XmlType(TypeName = "Supplier")]
public class Supplier: MasterElement
{
    public string SupplierID;
    public string AccountID;
}
[XmlType(TypeName = "Customer")]
public class Customer: MasterElement
{
    public string CustomerID;
    public string AccountID;
    public string CustomerTaxID;
}

到目前为止，XML正在解析，但当前的输出是

<MasterFiles>
    <MasterElement xsi:type="Supplier">
        <SupplierID>SUP-000001</SupplierID>
        <AccountID>Unknown</AccountID>
    </MasterElement>
    <MasterElement xsi:type="Customer">
        <CustomerID>CLI-000001</CustomerID>
        <AccountID>Unknown</AccountID>
        <CustomerTaxID>Unknown</CustomerTaxID>
    </MasterElement>
</MasterFiles>

但我想要的是

<MasterFiles>
    <Supplier>
        <SupplierID>SUP-000001</SupplierID>
        <AccountID>Unknown</AccountID>
    </Supplier>
    <Customer>
        <CustomerID>CLI-000001</CustomerID>
        <AccountID>Unknown</AccountID>
        <CustomerTaxID>Unknown</CustomerTaxID>
    </Customer>
</MasterFiles>

我在这里做错了什么？

C#-派生类的XML序列化

您可以使用XmlArrayItem来绕过这个问题：

public class XMLFile
{
    [XmlArray("MasterFiles")]
    [XmlArrayItem("Supplier", typeof(Supplier))]
    [XmlArrayItem("Customer", typeof(Customer))]
    public List<MasterElement> MasterFiles;
}

从链接的MSDN：

XmlArrayItemAttribute支持多态性——换句话说，它允许XmlSerializer将派生对象添加到数组中。

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