这些生成的类有问题。
问题出在MaryFrank.Joe
被声明为一个二维数组的MaryFrankJoeSusan
对象,但它被装饰了一个XmlArrayItemAttribute
,告诉序列化程序2D数组的每个项目都是MaryFrankJoeSusan
类型,而实际上是MaryFrankJoeSusan[]
。
如果你改变生成类中的这行代码:
[System.Xml.Serialization.XmlArrayItemAttribute("Susan", typeof(MaryFrankJoeSusan),
Form=System.Xml.Schema.XmlSchemaForm.Unqualified, IsNullable=false)]
转换为:
[System.Xml.Serialization.XmlArrayItemAttribute("Susan", typeof(MaryFrankJoeSusan[]),
Form=System.Xml.Schema.XmlSchemaForm.Unqualified, IsNullable=false)]
那么它将会顺利地序列化。但是,你得不到你想要的结果。与其得到这个:
<Mary>
<Frank>
<Joe>
<Susan>
<Stuff>my data</Stuff>
</Susan>
</Joe>
</Frank>
</Mary>
您将得到以下内容(请注意多出的
MaryFrankJoeSusan
标签):
<Mary>
<Frank>
<Joe>
<Susan>
<MaryFrankJoeSusan>
<Stuff>my data</Stuff>
</MaryFrankJoeSusan>
</Susan>
</Joe>
</Frank>
</Mary>
实际问题似乎是
xsd.exe
工具一开始就生成了错误的类结构。它没有创建代表Joe的类,而是试图将Joe和Susan合并在一起,这在这里并不真正起作用。
我通过工具运行了你在问题中提供的原始XML以生成XSD模式,结果如下:
<?xml version="1.0" encoding="utf-8"?>
<xs:schema id="Mary" xmlns="" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
<xs:element name="Mary" msdata:IsDataSet="true" msdata:UseCurrentLocale="true">
<xs:complexType>
<xs:choice minOccurs="0" maxOccurs="unbounded">
<xs:element name="Frank">
<xs:complexType>
<xs:sequence>
<xs:element name="Joe" minOccurs="0" maxOccurs="unbounded">
<xs:complexType>
<xs:sequence>
<xs:element name="Susan" minOccurs="0" maxOccurs="unbounded">
<xs:complexType>
<xs:sequence>
<xs:element name="Stuff" type="xs:string" minOccurs="0" />
</xs:sequence>
</xs:complexType>
</xs:element>
</xs:sequence>
</xs:complexType>
</xs:element>
</xs:sequence>
</xs:complexType>
</xs:element>
</xs:choice>
</xs:complexType>
</xs:element>
</xs:schema>
我认为这看起来不错。然后我拿同样的模式再次运行工具以生成C#类。我本来希望得到类似于下面的内容:
[Serializable]
[XmlRoot(Namespace = "", ElementName = "Mary")]
public class Mary
{
[XmlElement("Frank")]
public Frank[] Frank { get; set; }
}
[Serializable]
public class Frank
{
[XmlElement("Joe")]
public Joe[] Joe { get; set; }
}
[Serializable]
public class Joe
{
[XmlElement("Susan")]
public Susan[] Susan { get; set; }
}
[Serializable]
public class Susan
{
[XmlElement("Stuff")]
public string Stuff { get; set; }
}
但是我得到的是你在问题中链接的相同错误的类。所以我认为这是xsd工具的一个bug。
要使其正常工作,您可以使用我上面制作的手动编码类,将初始化代码更改为以下内容:
var susan = new Susan { Stuff = "my data" };
var joe = new Joe { Susan = new Susan[] { susan } };
var frank = new Frank { Joe = new Joe[] { joe } };
var mary = new Mary { Frank = new Frank[] { frank } };
--OR--
另一种选择是修改xsd文件。将Frank
和Joe
元素的xs:sequence
指示符替换为xs:choice
,如下所示:
<?xml version="1.0" encoding="utf-8"?>
<xs:schema id="Mary" xmlns="" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
<xs:element name="Mary" msdata:IsDataSet="true" msdata:UseCurrentLocale="true">
<xs:complexType>
<xs:choice minOccurs="0" maxOccurs="unbounded">
<xs:element name="Frank">
<xs:complexType>
<xs:choice>
<xs:element name="Joe" minOccurs="0" maxOccurs="unbounded">
<xs:complexType>
<xs:choice>
<xs:element name="Susan" minOccurs="0" maxOccurs="unbounded">
<xs:complexType>
<xs:sequence>
<xs:element name="Stuff" type="xs:string" minOccurs="0" />
</xs:sequence>
</xs:complexType>
</xs:element>
</xs:choice>
</xs:complexType>
</xs:element>
</xs:choice>
</xs:complexType>
</xs:element>
</xs:choice>
</xs:complexType>
</xs:element>
</xs:schema>
使用这个模式,生成的类会更好:现在有一个表示Joe的类。(为了简洁起见,我在此处简化了生成的代码并删除了一些属性):
[System.SerializableAttribute()]
[System.Xml.Serialization.XmlRootAttribute(Namespace="", IsNullable=false)]
public partial class Mary {
[System.Xml.Serialization.XmlElementAttribute("Frank", Form=System.Xml.Schema.XmlSchemaForm.Unqualified)]
public MaryFrank[] Items { get; set; }
}
[System.SerializableAttribute()]
public partial class MaryFrank {
[System.Xml.Serialization.XmlElementAttribute("Joe", Form=System.Xml.Schema.XmlSchemaForm.Unqualified)]
public MaryFrankJoe[] Items { get; set; }
}
[System.SerializableAttribute()]
public partial class MaryFrankJoe {
[System.Xml.Serialization.XmlElementAttribute("Susan", Form=System.Xml.Schema.XmlSchemaForm.Unqualified)]
public MaryFrankJoeSusan[] Items { get; set; }
}
[System.SerializableAttribute()]
public partial class MaryFrankJoeSusan {
[System.Xml.Serialization.XmlElementAttribute(Form=System.Xml.Schema.XmlSchemaForm.Unqualified)]
public string Stuff { get; set; }
}
设置代码如下:
var susan = new MaryFrankJoeSusan() { Stuff = "my data" };
var joe = new MaryFrankJoe() { Items = new MaryFrankJoeSusan[] { susan } };
var frank = new MaryFrank() { Items = new MaryFrankJoe[] { joe } };
var mary = new Mary { Items = new MaryFrank[] { frank } };
我们得到了预期的输出:
<?xml version="1.0" encoding="utf-16"?>
<Mary xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<Frank>
<Joe>
<Susan>
<Stuff>my data</Stuff>
</Susan>
</Joe>
</Frank>
</Mary>