XmlAttribute顺序或序列在序列化.NET类时出现问题。

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英文:

XmlAttribute order or sequence going wrong while serializing .net class

问题

I have an existing class where we have many public properties. Most of them are decorated with [XmlAttribute]. Issue is when I have 16 member then xml show order of attribute correctly

  1. class Market
  2. {
  3.     [XmlArray(Order = 0)]
  4.     [XmlArrayItem(IsNullable = false)]
  5.     public List<Option> Options { get; set; }
  7.     [XmlElement(Order = 1)]
  8.     public MarketType MarketType { get; set; }
  10.     [XmlAttribute]
  11.     public int Id {get;set;}
  13.     [XmlAttribute]
  14.     public string Name {get;set;}
  16.     [XmlAttribute]
  17.     public bool IsEnabled {get;set;}
  18.     .
  19.     .
  20.     .
  21.     // like this 17 XML attribute are there
  22. }
  23. <Market Id="10" Name="Test" IsEnabled="false"  ...  a="" b="" c="" d="">

When I have 17 attribute then it brings 3rd Last and 4th Last attribute in the start and 1st properties goes to 3rd last and 4th last position, i.e. order got disturbed. I tried shuffling element, it only swaps 1st 2 attribute with 3rd and 4th last attribute.

  1. <Market b="" a="" IsEnabled="false"  ... Name="Test" Id="10"  c="" d="">
英文:

I have a existing class where we have many public properties. Most of them are decorated with [XmlAttribute]. Issue is when I have 16 member then xml show order of attribute correctly

  1. class Market
  2. {
  3.     [XmlArray(Order = 0)]
  4.     [XmlArrayItem(IsNullable = false)]
  5.     public List&lt;Option&gt; Options { get; set; }
  7.     [XmlElement(Order = 1)]
  8.     public MarketType MarketType { get; set; }
  10.     [XmlAttribute]
  11.     public int Id {get;set;}
  13.     [XmlAttribute]
  14.     public string Name {get;set;}
  16.     [XmlAttribute]
  17.     public bool IsEnabled {get;set;}
  18.         .
  19.         .
  20.         .
  21.     // like this 17 XML attribute are there
  22. }
  23. &lt;Market Id=&quot;10&quot; Name=&quot;Test&quot; IsEnabled=&quot;false&quot;  ...  a=&quot;&quot; b=&quot;&quot; c=&quot;&quot; d=&quot;&quot;&gt;

When I have 17 attribute then it brings 3rd Last and 4th Last attribute in the start and 1st properties goes to 3rd last and 4th last position, i.e. order got disturbed. I tried shuffling element, it only swaps 1st 2 attribute with 3rd and 4th last attribute.

  1. &lt;Market b=&quot;&quot; a=&quot;&quot; IsEnabled=&quot;false&quot;  ... Name=&quot;Test&quot; Id=&quot;10&quot;  c=&quot;&quot; d=&quot;&quot;&gt;

答案1

得分: 3

XML中不能依赖属性的顺序：https://stackoverflow.com/a/57757267/20771004

如果顺序很重要，您可能希望将它们改为元素。

英文:

You can’t rely on the order of attributes in XML: https://stackoverflow.com/a/57757267/20771004

If order is important, you might want to make them elements instead.

答案2

得分: 1

使用IXmlSerializable进行自定义序列化

  1. class Market : IXmlSerializable
  2. {
  3.     [XmlAttribute]
  4.     public int Id { get; set; }
  6.     [XmlAttribute]
  7.     public string Name { get; set; }
  9.     [XmlAttribute]
  10.     public bool IsEnabled { get; set; }
  12.     // 类似这样的 17 个 XML 属性
  13.     public void WriteXml(XmlWriter writer)
  14.     {
  15.         writer.WriteAttributeString("Id", Id.ToString());
  16.         writer.WriteAttributeString("Name", Name);
  17.         writer.WriteAttributeString("IsEnabled", IsEnabled.ToString());
  18.     }
  20.     public void ReadXml(XmlReader reader)
  21.     {
  22.         XElement element = (XElement)XElement.ReadFrom(reader);
  23.         foreach (XElement node in element.Elements())
  24.         {
  25.         }
  26.         foreach (XAttribute attribute in element.Attributes())
  27.         {
  28.             switch (attribute.Name.LocalName)
  29.             {
  30.                 case "Id":
  31.                     Id = (int)attribute;
  32.                     break;
  33.                 case "Name":
  34.                     Name = (string)attribute;
  35.                     break;
  36.                 case "IsEnabled":
  37.                     IsEnabled = (Boolean)attribute;
  38.                     break;
  39.             }
  40.         }
  41.     }
  43.     public XmlSchema GetSchema()
  44.     {
  45.         return (null);
  46.     }
  47. }
英文:

Use a custom serialization using IXmlSerializable

<!-- begin snippet: js hide: false console: true babel: false -->

  1.     class Market : IXmlSerializable
  2.     {
  4.         [XmlAttribute]
  5.         public int Id {get;set;}
  7.         [XmlAttribute]
  8.         public string Name {get;set;}
  10.         [XmlAttribute]
  11.         public bool IsEnabled {get;set;}
  12.  
  13.         // like this 17 XML attribute are there
  14.         public void WriteXml(XmlWriter writer)
  15.         {
  16.             writer.WriteAttributeString(&quot;Id&quot;, Id.ToString());
  17.             writer.WriteAttributeString(&quot;Name&quot;, Name);
  18.             writer.WriteAttributeString(&quot;IsEnabled&quot;, IsEnabled.ToString());
  19.         }
  21.         public void ReadXml(XmlReader reader)
  22.         {
  23.             XElement element = (XElement)XElement.ReadFrom(reader);
  24.             foreach(XElement node in element.Elements())
  25.             {
  26.             }
  27.             foreach (XAttribute attribute in element.Attributes())
  28.             {
  29.                 switch (attribute.Name.LocalName)
  30.                 {
  31.                     case &quot;Id&quot; :
  32.                         Id = (int)attribute;
  33.                         break;
  34.                     case &quot;Name&quot;:
  35.                         Name  = (string)attribute;
  36.                         break;
  37.                     case &quot;IsEnabled&quot;:
  38.                         IsEnabled = (Boolean)attribute;
  39.                         break;
  40.                 }
  41.             }
  42.         }
  44.         public XmlSchema GetSchema()
  45.         {
  46.             return (null);
  47.         }
  48.     }

<!-- end snippet -->

答案3

得分: 0

Here is the translated code:

  1. 找到了正确的解决方案，我从 XmlArray 和 XmlElement 中移除了 order，然后它开始正常工作。
  2. 现在我的类看起来像这样：
  4. class Market
  5. {
  6.     [XmlArray]
  7.     [XmlArrayItem(IsNullable = false)]
  8.     public List<Option> Options { get; set; }
  10.     [XmlElement]
  11.     public MarketType MarketType { get; set; }
  13.     [XmlAttribute]
  14.     public int Id { get; set; }
  16.     [XmlAttribute]
  17.     public string Name { get; set; }
  19.     [XmlAttribute]
  20.     public bool IsEnabled { get; set; }
  21.     .
  22.     .
  23.     .
  24.     // 这样一共有 17 个 XML 属性
  25. }
英文:

Got a proper solution, I removed order from XmlArray and XmlElement and it started working fine,
Now my class looks like this

  1. class Market
  2. {
  3.     [XmlArray]
  4.     [XmlArrayItem(IsNullable = false)]
  5.     public List&lt;Option&gt; Options { get; set; }
  7.     [XmlElement]
  8.     public MarketType MarketType { get; set; }
  10.     [XmlAttribute]
  11.     public int Id {get;set;}
  13.     [XmlAttribute]
  14.     public string Name {get;set;}
  16.     [XmlAttribute]
  17.     public bool IsEnabled {get;set;}
  18.     .
  19.     .
  20.     .
  21.     // like this 17 XML attribute are there
  22. }

huangapple
  • 本文由 发表于 2023年6月8日 18:25:01
  • 转载请务必保留本文链接：https://go.coder-hub.com/76430903.html
  • .net
  • .net-7.0
  • c#
  • serialization
  • xml
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