c# - 无法反序列化 XML 字符串

Question

我有以下 xml，我试图按如下方式反序列化，但出现错误:

There was an error reflecting type 'System.Collections.Generic.List`1[MyApp.Models.Field]

下面是我的代码

public class FieldList
{
    [XmlArray("fields")]
    [XmlArrayItem("field")]
    List<Field> Fields { get; set; }
}

public class Field
{
    [XmlAttribute("type")]
    public string Type { get; set; }

    [XmlAttribute("required")]
    public bool Required { get; set; }

    [XmlAttribute("label")]
    public string Label { get; set; }

    [XmlAttribute("name")]
    public string Name { get; set; }

    [XmlElement("option")]
    [JsonProperty("values")]
    public List<Option> Options { get; set; }
}

public class Option
{
    [XmlAttribute("label")]
    public string Label { get; set; }

    [XmlAttribute("value")]
    public string Value { get; set; }

    [XmlAttribute("selected")]
    public bool Selected { get; set; }

    /// <remarks/>
    [XmlIgnore()]
    public bool SelectedSpecified { get; set; }

    [XmlText]
    public string Text { get; set; }
}

var xml =  @"<?xml version=""1.0"" ?>
   <form-template>
    <fields>
        <field type=""select"" required=""true"" label=""Cars"" name=""cars"" >
            <option label=""Toyota"" value=""Toyota"" selected=""true"">Toyota</option>
            <option label=""Nisan"" value=""Nisan"" >Nisan</option>
        </field>
    </fields>
   </form-template>";


 var serializer = new XmlSerializer(typeof(FieldList), new XmlRootAttribute("form-template"));
 var stringReader = new StringReader(xml);
 var xmlFields = (FieldList)serializer.Deserialize(stringReader);

我做错了什么？

* 更新 *

根据下面的评论更改

 public IEnumerable<Option> Options { get; set; }

到

  public List<Option> Options { get; set; }

修复了错误，但现在没有反序列化 - 变量 xmlFields 为空？？？我需要从特定节点读取还是应该无关紧要？

Answer 1

XmlSerializer 无法序列化抽象属性，因此请将 IEnumerable 更改为 List，如下所示，

public IEnumerable<Option> Options { get; set; }

到

public List<Option> Options { get; set; }

您的根元素与您拥有的 XML 结构不匹配。我已经像下面这样编辑了 XML，

var xml = "<?xml version=\"1.0\" ?>" +
                    "  " +
                    "    <Fields>" +
                    "        <Field Type=\"select\" Required=\"true\" Label=\"Cars\" Name=\"cars\" >" +
                    "            <option label=\"Toyota\" lalue=\"Toyota\" selected=\"true\">Toyota</option>" +
                    "            <option label=\"Nisan\" value=\"Nisan\" >Nisan</option>" +
                    "        </Field>" +
                    "    </Fields>";

并将代码反序列化为，

XmlSerializer serializer = new XmlSerializer(typeof(List<Field>), new XmlRootAttribute("Fields"));

    var stringReader = new StringReader(xml);
        List<Field> xmlFields = (List<Field>)serializer.Deserialize(stringReader);

现在可以反序列化了。请查看输出，