我试图反序列化以下文件：
<league>
<players>
<skater>
<name>Wayne Stamkos</name>
<goals>23</goals>
<assists>34</assists>
</skater>
<skater>
<name>Sidney Lindros</name>
<goals>41</goals>
<assists>44</assists>
</skater>
<goalie>
<name>Martin Roy</name>
<wins>15</wins>
<losses>12</losses>
</goalie>
<skater>
<name>Paul Forsberg</name>
<goals>21</goals>
<assists>51</assists>
</skater>
<goalie>
<name>Roberto Rinne</name>
<wins>18</wins>
<losses>23</losses>
</goalie>
</players>
</league>
使用以下代码：
namespace ConsoleApplication2
{
[XmlRoot("league")]
public class League
{
[XmlArray("players")]
[XmlArrayItem("skater")]
public List<Skater> skaters { get; set; }
[XmlArrayItem("goalie")]
public List<Goalie> goalies { get; set; }
}
public class Skater
{
[XmlElement("name")]
public string Name;
[XmlElement("goals")]
public int Goals;
[XmlElement("assists")]
public int Assists;
}
public class Goalie
{
[XmlElement("name")]
public string Name;
[XmlElement("wins")]
public int Wins;
[XmlElement("losses")]
public int Losses;
}
class Program
{
static void Main(string[] args)
{
using (FileStream reader = new FileStream(@"C:\Temp\test.xml",FileMode.Open,FileAccess.Read))
{
var ser = new XmlSerializer(typeof(League));
League league = (League)ser.Deserialize(reader);
}
}
}
}
我期待得到一个包含一个包含3个元素和一个具有2个元素的Goalies列表的Skaters列表的League对象.我得到预期的Skaters列表,但Goalies列表是空的.我究竟做错了什么？
解决方法
有两种方法可以做到这一点：第一个是做一些像：
[XmlArray("players")]
[XmlArrayItem("skater",Type=typeof(Skater))]
[XmlArrayItem("goalie",Type=typeof(Goalie))]
public List<SomeCommonBaseClass> Players { get; set; }
它将两个元素类型映射到单个集合中.最差的情况下,SomeCommonBaseClass可以是对象：
[XmlArray("players")]
[XmlArrayItem("skater",Type=typeof(Goalie))]
public List<object> Players { get; set; }
第二个是使<玩家>映射到包装器对象：
[XmlElement("players")]
public Players Players { get;set;}
...
public class Players
{
[XmlElement("skater")]
public List<Skater> Skaters {get;set;}
[XmlElement("goalie")]
public List<Goalie> Goalies {get;set;}
}
哪种选择取决于情况;后者允许像“至多一个守门员”一样,将其改为：
[XmlElement("goalie")]
public Goalie Goalie {get;set;}
