C# 反序列化具有多个元素属性的 XML 文件 - 属性不会反序列化
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原文地址: http://stackoverflow.com/questions/14245846/
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Deserializing XML File with multiple element attributes - attributes are not deserializing
提问by Amazing Grace
Using C# .Net 4 -- XML Sample (Real sample has 6 attributes)
使用 C# .Net 4 -- XML 示例（真实示例有 6 个属性）
<TestXML>
<TestElement attr1="MyAttr" attr2="1" DateAdded="">25</TestElement>
</TestXML>
For my class definition I have the following:
对于我的类定义，我有以下内容：
public class TestXML() {
public TestXML() {}
public int TestElement {get; set;}
[XmlAttribute]
public string attr1 {get; set;}
[XmlAttribute]
public string attr2 {get; set;}
[XmlIgnore]
public DateTime DateAdded {get; set;}
[XmlAttribute("DateAdded")]
public string dateadded {
get{ return (DateAdded == null ? "" : DateAdded.ToString();}
set{ if(!value.Equals("")) DateAdded = DateTime.Parse(value);}
}
}
Now the code to deserialize:
现在反序列化的代码：
string xml = "<TestXML><TestElement attr1=\"MyAttr\" attr2=\"1\" DateAdded=\"\">26</TestElement></TestXML>"
using (StringReader sr = new StringReader(xml)) {
XmlSerializer serializer = new XmlSerializer(typeof(TestXML));
TestXML myxml = (TestXML)serializer.Deserialize(sr);
}
Now the result we get is(viewing object in VS):
现在我们得到的结果是（在VS中查看对象）：
myxml
attr1 | null
attr2 | null
TestElement | 25
At a complete loss as to why the attributes will not deserialize.
完全不知道为什么属性不会反序列化。
采纳答案by Marc Gravell
To do that you need two levels:
为此，您需要两个级别：
[XmlRoot("TestXML")]
public class TestXml {
[XmlElement("TestElement")]
public TestElement TestElement { get; set; }
}
public class TestElement {
[XmlText]
public int Value {get;set;}
[XmlAttribute]
public string attr1 {get;set;}
[XmlAttribute]
public string attr2 {get;set;}
}
Note that the > 26 <may cause problems too (whitespace); you may need that to be a string instead of an int.
请注意，> 26 <也可能会导致问题（空格）；你可能需要它是一个字符串而不是一个整数。
回答by Mir
You are defining the attributes on TestElementwhile they should be on TestXML. Example:
您正在定义属性 onTestElement而它们应该是 on TestXML。例子：
@"<TestXML attr1=""MyAttr"" attr2=""1"">
<TestElement>26</TestElement>
</TestXML>"
回答by sa_ddam213
I just ran a test serializing/deserializing your object and it seems to work fine
我刚刚运行了一个测试序列化/反序列化你的对象，它似乎工作正常
Test:
测试：
TestXML obj = new TestXML{ attr1 = "Attrib1", attr2 = "Attrib2", DateAdded = DateTime.Now, TestElement = 44};
XmlSerializer serializer = new XmlSerializer(typeof(TestXML));
using (FileStream stream = new FileStream(@"C:\StackOverflow.xml", FileMode.OpenOrCreate))
{
serializer.Serialize(stream, obj);
}
using (FileStream stream = new FileStream(@"C:\StackOverflow.xml", FileMode.Open))
{
TestXML myxml = (TestXML)serializer.Deserialize(stream);
}
all attributes deserialized ok.
所有属性反序列化正常。
Result:
结果：
Xml:
xml:
<?xml version="1.0"?>
<TestXML xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" attr1="Attrib1" attr2="Attrib2" DateAdded="10/01/2013 9:46:23 a.m.">
<TestElement>44</TestElement>
</TestXML>
回答by goku_da_master
As an additional note to the accepted answer. Make sure the xml element doesn't contain a nil="true" attribute like this:
作为已接受答案的附加说明。确保 xml 元素不包含像这样的 nil="true" 属性：
<TestXML>
<TestElement attr1="MyAttr" attr2="1" DateAdded="" xsi:nil="true">25</TestElement>
</TestXML>
From my experience the deserializer won't deserialize attributes of an element marked as null (nil).
根据我的经验，反序列化器不会反序列化标记为 null (nil) 的元素的属性。
