我在从几个 XSD 生成 C# 类时遇到了一个相当大的问题。在序列化期间,枚举成员获取错误的值。我正在序列化的 XML 中不存在该属性,因此我希望它为 NULL 或“0”,但它获取的值“1”是枚举中的第一个可用值。
假设我有一个名为“person.xsd”的 XSD,它看起来像这样;
人.xsd
<?xml version="1.0" encoding="UTF-8"?>
<xs:schema>
<xs:import namespace="http://www.somewhere.nl/folder1/1_1/basisschema/schema/1" schemaLocation="basisschema.xsd"/>
<xs:complexType name="Person">
<xs:annotation>
<xs:documentation>Personal information</xs:documentation>
</xs:annotation>
<xs:sequence>
<xs:element name="SomeType" type="ns:CDT_SomeType" minOccurs="0">
<xs:annotation>
<xs:documentation>Some type.</xs:documentation>
</xs:annotation>
</xs:element>
</xs:sequence>
</xs:complexType>
</xs:schema>
person XSD 包含一个名为“basisschema.xsd”的基本模式。该文件如下所示;
基础架构.xsd
<xs:schema targetNamespace="http://www.somewhere.nl/folder1/1_1/basisschema/schema/1" elementFormDefault="qualified" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:ns="http://www.somewhere.nl/folder1/1_1/basisschema/schema/1">
<xs:complexType name="CDT_SomeType">
<xs:annotation>
<xs:documentation>Some type.</xs:documentation>
</xs:annotation>
<xs:sequence>
<xs:element name="SomeEnumElement" type="ns:LDT_SomeEnumElement">
<xs:annotation>
<xs:documentation>Some enum</xs:documentation>
</xs:annotation>
</xs:element>
</xs:sequence>
</xs:complexType>
</xs:schema>
生成的代码如下所示;
客户端.cs
[System.CodeDom.Compiler.GeneratedCodeAttribute("System.Xml", "4.6.81.0")]
[System.SerializableAttribute()]
[System.ComponentModel.DesignerCategoryAttribute("code")]
[System.Xml.Serialization.XmlTypeAttribute(Namespace = "http://www.somewhere.nl/folder1/1_1/basisschema/schema/1")]
[System.Xml.Serialization.XmlRootAttribute(Namespace = "http://www.somewhere.nl/folder1/1_1/basisschema/schema/1", IsNullable = true)]
public class Client
{
private CdtSomeType _someType;
public Client()
{
_someType = new CdtSomeType();
}
public CdtSomeType SomeType
{
get
{
return _someType;
}
set
{
_someType = value;
}
}
}
CdtSomeType.cs
[System.CodeDom.Compiler.GeneratedCodeAttribute("System.Xml", "4.6.81.0")]
[System.SerializableAttribute()]
[System.ComponentModel.DesignerCategoryAttribute("code")]
[System.Xml.Serialization.XmlTypeAttribute(Namespace = "http://www.somewhere.nl/folder1/1_1/basisschema/schema/1")]
public class CdtSomeType
{
private LDTSomeEnumElement _someEnumElement;
public LDTSomeEnumElement SomeEnumElement
{
get
{
return _verklaringField;
}
set
{
_verklaringField = value;
}
}
}
我期望 Person.cs 中有一个“CdtSomeType”类型的可选属性,但是这并没有发生。现在,当我们使用以下代码序列化与此 XSD 匹配的 XML 文件时;
using (var reader = new StringReader(message))
{
var myXmlObject = (Person)serializer.Deserialize(reader);
//This value isn't available in the XML so I want this to be NULL instead of the default Enum value.
var test = myXmlObject.SomeType.SomeEnumElement;
}
然后属性“SomeEnumElement”具有默认枚举值 (1),而不是 NULL 或“0”。这发生在序列化期间。我能做些什么来解决这个问题?