可选属性的默认值XML序列化 [英] XML Serialization of the default values of optional attributes
问题描述
我有一组类生成使用XSD.EXE,和我想连载他们。然而,属性不被包括在生成的XML。下面是模式的一部分问题出在哪里。
I have a set of classes build using xsd.exe, and I am trying to serialise them. However, an attribute is not being included in the resulting XML. Here is part of the schema where the problem lies.
<xsd:element name="Widget">
<xsd:complexType>
/* sequence removed for brevity */
<xsd:attribute name="Version" type="Version" use="optional" default="1.1"/>
</xsd:complexType>
</xsd:element>
<xsd:simpleType name="Version">
<xsd:restriction base="xsd:string">
<xsd:enumeration value="1.0"/>
<xsd:enumeration value="1.1"/>
</xsd:restriction>
</xsd:simpleType>
XSD.EXE生成一个名为版本的属性上的窗口小部件级和所谓的VersionSpecified另一个属性,但是这似乎没有产生该属性设置为true时,当我连序列:
xsd.exe generated a property called "Version" on a "Widget" class and another property called "VersionSpecified", but this not appear to generate the attribute when I serialize even when set to true:
[XmlAttributeAttribute]
[DefaultValueAttribute(Version.Version_1_1)]
public Version Version { get; set; }
[Serialization.XmlIgnoreAttribute]
public bool VersionSpecified { get; set; }
这是其所依据的枚举:
And this is the enumeration on which it is based:
/// <remarks/>
[GeneratedCodeAttribute("xsd", "2.0.50727.3038")]
[Serializable]
public enum Version
{
[XmlEnumAttribute("1.0")]
Version_1_0,
[XmlEnumAttribute("1.1")]
Version_1_1,
}
code段为每个请求
Code snippet as per request
Widget widget = new Widget();
widget.Version = Version.Version_1_1;
widget.VersionSpecified = true;
XmlSerializer serializer = new XmlSerializer(widget.GetType());
serializer.Serialize(/*Memory Stream object*/, widget);
有没有人对为什么系列化拒绝引入属性有什么想法?
Does anyone have any thoughts on why the serialization refuses to introduce the attribute?
推荐答案
它,因为你指定的默认值为1.1。该串行器将无法创建元素/属性,当属性等于它的默认值。
Its because you specified the default value as "1.1". The serialiser will not create the element/attribute when the property is equal to its default value.
这篇关于可选属性的默认值XML序列化的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!