给定以下代码...
[XmlType("Field")]
public class SearchField
{
[XmlAttribute("alias")]
public string Alias;
[XmlAttribute("entity")]
public string Entity;
}
Alias是我们的可选字段,但当xml中缺少“alias”属性时,反序列化程序会抛出异常。如何使其可选?是否需要模式?
给定以下代码...
[XmlType("Field")]
public class SearchField
{
[XmlAttribute("alias")]
public string Alias;
[XmlAttribute("entity")]
public string Entity;
}
Alias是我们的可选字段,但当xml中缺少“alias”属性时,反序列化程序会抛出异常。如何使其可选?是否需要模式?
很奇怪,因为以下程序对我来说很好用,没有任何异常:
using System;
using System.IO;
using System.Xml;
using System.Xml.Serialization;
[XmlType("Field")]
public class SearchField
{
[XmlAttribute("alias")]
public string Alias;
[XmlAttribute("entity")]
public string Entity;
}
class Program
{
static void Main()
{
using (var reader = new StringReader("<Field entity=\"en\" />"))
{
var serializer = new XmlSerializer(typeof(SearchField));
var s = (SearchField)serializer.Deserialize(reader);
Console.WriteLine(s.Alias);
Console.WriteLine(s.Entity);
}
}
}
正如您所看到的,在输入XML中省略了alias
属性,但反序列化时没有出现问题。