Question

目前，下面的代码在序列化期间省略了null属性。我希望输出xml中的null值属性为空元素。我在网上搜索但没有找到任何有用的东西。任何帮助将不胜感激。

        var serializer = new XmlSerializer(application.GetType());
        var ms = new MemoryStream();
        var writer = new StreamWriter(ms);
        serializer.Serialize(writer, application);
        return ms;

抱歉，我忘了提及我想避免属性修饰。

Answer 1

您能控制必须序列化的项目吗？使用

[XmlElement(IsNullable = true)]
public string Prop { get; set; }

您可以将其表示为<Prop xsi:nil="true" />

Answer 2

设置XmlElementAttribute.IsNullable属性：

https://msdn.microsoft.com/en-us/library/system.xml.serialization.xmlelementattribute.isnullable(v=vs.110).aspx

Answer 3

您也可以使用以下代码。模式为ShouldSerialize{PropertyName}

public class PersonWithNullProperties
{
    public string Name { get; set; }
    public int? Age { get; set; }
    public bool ShouldSerializeAge()
    {
        return true;
    }
}

  PersonWithNullProperties nullPerson = new PersonWithNullProperties() { Name = "ABCD" };
  XmlSerializer xs = new XmlSerializer(typeof(nullPerson));
  StringWriter sw = new StringWriter();
  xs.Serialize(sw, nullPerson);

XML

<?xml version="1.0" encoding="utf-16"?>
<Person xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://
www.w3.org/2001/XMLSchema">
  <Name>ABCD</Name>
  <Age xsi:nil="true" />
</Person>

如何在xml序列化期间包含null属性

3 个答案: