仅序列化指定[XmlElement]的属性,而不更改原始类
本文关键字:原始 属性 序列化 XmlElement | 更新日期: 2023-09-27 18:08:27
代码:
[Serializable]
public class MyClass
{
[XmlElement("Company")]
public string Company { get; set; }
[XmlElement("Amount")]
public decimal Amount { get; set; }
public int companyid { get; set; }
}
现在我只想序列化用[XmlElement]
指定的那些,companyid不需要序列化。
那么,我能做什么呢?
下面是我在LinqPad中创建的一个简单示例。Main
方法的前4行设置了一个XmlAttributeOverrides
实例,然后该实例用于告诉XmlSerializer
不要序列化companyid
属性。
void Main()
{
//Serialize, but ignore companyid
var overrides = new XmlAttributeOverrides();
var attributes = new XmlAttributes();
attributes.XmlIgnore = true;
overrides.Add(typeof(MyClass), "companyid", attributes);
using(var sw = new StringWriter()) {
var xs = new XmlSerializer(typeof(MyClass), overrides);
var a = new MyClass() {
Company = "Company Name",
Amount = 10M,
companyid = 7
};
xs.Serialize(sw, a);
Console.WriteLine(sw.ToString());
}
}
[Serializable]
public class MyClass
{
[XmlElement("Company")]
public string Company { get; set; }
[XmlElement("Amount")]
public decimal Amount { get; set; }
public int companyid { get; set; }
}
该程序的输出为:
<?xml version="1.0" encoding="utf-16"?>
<MyClass xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<Company>Company Name</Company>
<Amount>10</Amount>
</MyClass>
如果您需要此代码来检查类,以根据不存在的XmlElementAttribute
来确定要排除哪些属性,那么您可以修改以上代码以使用反射来枚举对象的属性。对于每个没有XmlElementAttribute
的属性,将一个项添加到overrides
实例中。
例如:
void Main()
{
//Serialize, but ignore properties that do not have XmlElementAttribute
var overrides = new XmlAttributeOverrides();
var attributes = new XmlAttributes();
attributes.XmlIgnore = true;
foreach(var prop in typeof(MyClass).GetProperties())
{
var attrs = prop.GetCustomAttributes(typeof(XmlElementAttribute));
if(attrs.Count() == 0)
overrides.Add(prop.DeclaringType, prop.Name, attributes);
}
using(var sw = new StringWriter()) {
var xs = new XmlSerializer(typeof(MyClass), overrides);
var a = new MyClass() {
Company = "Company Name",
Amount = 10M,
companyid = 7,
blah = "123" };
xs.Serialize(sw, a);
Console.WriteLine(sw.ToString());
}
}
[Serializable]
public class MyClass
{
[XmlElement("Company")]
public string Company { get; set; }
[XmlElement("Amount")]
public decimal Amount { get; set; }
public int companyid { get; set; }
public string blah { get; set; }
}