Question

我正在制作Windows Phone 8.1 Silverlight应用程序。我想要 LinkedIn身份验证。我从互联网上得到了1-3个样本。但他们都在同一行报告错误：

using System.Xml.Serialization;
personXerializer = new XmlSerializer(typeof(SampleLinkedApp.Data.person));

给我错误：

System.Xml.Serialization.ni.dll中出现“System.InvalidOperationException”类型的异常，但未在用户代码中处理附加信息：反映类型的错误 'SampleLinkedApp.Data.person'。

另外，的 person.cs：

[XmlRoot("person")]
    public class person
    {      
        [XmlElement("first-name")]
        public string FirstName { get; set; }

        [XmlElement("last-name")]
        public string LastName { get; set; }

        [XmlElement("headline")]
        public string Headline { get; set; }

        [XmlElement("headline")]
        public string Interests { get; set; }
    }

问题出在哪里？

同时在此问题中添加内部异常：

    {System.InvalidOperationException: There was an error reflecting property 'Interests'. ---> System.InvalidOperationException: The XML element 'headline' from namespace '' is already present in the current scope. Use XML attributes to specify another XML name or namespace for the element.
   at System.Xml.Serialization.XmlReflectionImporter.AddUniqueAccessor(INameScope scope, Accessor accessor)
   at System.Xml.Serialization.XmlReflectionImporter.AddUniqueAccessor(MemberMapping member, INameScope elements, INameScope attributes, Boolean isSequence)
   at System.Xml.Serialization.XmlReflectionImporter.InitializeStructMembers(StructMapping mapping, StructModel model, Boolean openModel, String typeName, RecursionLimiter limiter)
   --- End of inner exception stack trace ---
   at System.Xml.Serialization.XmlReflectionImporter.InitializeStructMembers(StructMapping mapping, StructModel model, Boolean openModel, String typeName, RecursionLimiter limiter)
   at System.Xml.Serialization.XmlReflectionImporter.ImportStructLikeMapping(StructModel model, String ns, Boolean openModel, XmlAttributes a, RecursionLimiter limiter)
   at System.Xml.Serialization.XmlReflectionImporter.ImportTypeMapping(TypeModel model, String ns, ImportContext context, String dataType, XmlAttributes a, Boolean repeats, Boolean openModel, RecursionLimiter limiter)}

Answer 1

它告诉你......

来自命名空间''的XML元素'标题'已经存在于当前范围内。使用XML属性为元素指定另一个XML名称或命名空间。

所以看看：

[XmlElement("headline")]
public string Headline { get; set; }

[XmlElement("headline")]
public string Interests { get; set; }

他们不能两者都是<headline>，因为在反序列化时，无法知道在查看<headline>foo</headline>时使用哪个。现在，您可以争辩“但我只想序列化”，但XmlSerializer不信任人们以这种方式工作：它只会序列化它认为也可以反序列化的模型。

猜测，你需要类似的东西：

[XmlElement("interests")]
public string Interests { get; set; }

＆＃39; System.InvalidOperationException＆＃39;发生在System.Xml.Serialization.ni.dll中

1 个答案: