C#反序列化列表计数为零

Question

在让我的类正确反序列化时遇到一些问题。

其他反序列化类工作正常，并且在性质上看起来相似，但是当反序列化器运行时，ErrorDetail 和 String 列表的计数均为 0。

我错过了什么/做错了什么？

XML：

<PlaceOrderResponse
    xmlns="http://blah.co.uk">
    <PlaceOrderResult
        xmlns:a="http://blah.co.uk/WebserviceMessage"
        xmlns:i="http://www.w3.org/2001/XMLSchema-instance">
        <a:ErrorDetails
            xmlns:b="http://blah.co.uk/Error">
            <b:ErrorDetail>
                <b:Code>1fasd</b:Code>
                <b:Message>Explain</b:Message>
            </b:ErrorDetail>
        </a:ErrorDetails>
        <a:ID i:nil="true"/>
        <a:InformationalMessages
            xmlns:b="http://schemas.microsoft.com/2003/10/Serialization/Arrays"/>
            <a:Status>1</a:Status>
        </PlaceOrderResult>
    </PlaceOrderResponse>

C# 类：

[Serializable()]
    [XmlRoot(ElementName = "PlaceOrderResponse", Namespace = "http://blah.co.uk", IsNullable = false)]
    [XmlType(AnonymousType = true, Namespace = "http://blah.co.uk")]
    public class PlaceOrderResponse
    {
        [XmlElement(ElementName = "PlaceOrderResult")]
        public PlaceOrderResult placeOrderResult { get; set; }
    }

    [XmlRoot(ElementName = "PlaceOrderResult")]
    public class PlaceOrderResult : WebserviceMessage { }

[XmlRoot(Namespace = "http://blah.co.uk/WebserviceMessage")]
    [XmlType(AnonymousType = true)]
    public class WebserviceMessage
    {
        [XmlArray("ErrorDetails")]
        [XmlArrayItem("ErrorDetail", typeof(ErrorDetail))]
        public ErrorDetails errorDetails { get; set; }
        [XmlElement("ID")]
        public string ID { get; set; }
        [XmlArray("InformationMessages")]
        [XmlArrayItem(typeof(String))]
        public List<String> InformationMessages { get; set; }
        [XmlElement("Status")]
        public string Status { get; set; }
    }

[XmlRoot(ElementName = "ErrorDetails")]
    [XmlTypeAttribute(AnonymousType = true)]
    public class ErrorDetails : List<ErrorDetail> { }

    [XmlRoot(ElementName = "ErrorDetail", Namespace = "http://blah.co.uk/Error")]
    [XmlTypeAttribute(AnonymousType = true)]
    public class ErrorDetail
    {
        [XmlElement(ElementName = "Code")]
        public string Code { get; set; }
        [XmlElement(ElementName = "Message")]
        public string Message { get; set; }
    }

Answer 1

也许缺少引号来完成这一行中的 url 字符串？

[XmlType(AnonymousType = true, Namespace = "http://blah.co.uk)]

Answer 2

除了PlaceOrderResponse 的根元素之外，您的XmlRoot 属性对任何类都没有任何好处。您需要将正确的命名空间添加到您的 XmlArrayItem 属性中。

例如：

[XmlArray("ErrorDetails")]
[XmlArrayItem("ErrorDetail", typeof(ErrorDetail), Namespace = "http://blah.co.uk/Error")]
public ErrorDetails errorDetails { get; set; }

Answer 3

您的XmlArrayItem 将从其父级继承其命名空间。所以你需要明确地包括这个：

[XmlArrayItem("ErrorDetail", typeof(ErrorDetail), Namespace = "http://blah.co.uk/Error")].

关于信息性消息，没有要加载的字符串，因此很难判断 XML 应该 是什么样子。它将期望 <string>message</string>

形式的元素

作为提示，调试这些问题的最简单方法是尝试相反的方法 - 创建一个对象并将其序列化为 XML。然后将其与您尝试反序列化的内容进行比较，您会发现很容易发现差异所在。

Answer 4

我没有亲手完成它，但我只能假设你的课程在某些方面是错误的。使用下面的类和您的 XML，我能够正确反序列化。

为了简洁起见，我假设您错过了 XML 的标头？

<?xml version="1.0" encoding="utf-8"?>

我会仔细检查并编辑帖子以防我错了，但您知道在 .NET 4.5 和 Visual Studio 2013 上您可以转到编辑 > 选择性粘贴 > 将 XML 粘贴为类并让 Visual Studio 编写该类为你？这就是我所做的。

类

/// <remarks/>
[System.Xml.Serialization.XmlTypeAttribute(AnonymousType = true, Namespace = "http://blah.co.uk")]
[System.Xml.Serialization.XmlRootAttribute(Namespace = "http://blah.co.uk", IsNullable = false)]
public partial class PlaceOrderResponse
{

    private PlaceOrderResponsePlaceOrderResult placeOrderResultField;

    /// <remarks/>
    public PlaceOrderResponsePlaceOrderResult PlaceOrderResult
    {
        get
        {
            return this.placeOrderResultField;
        }
        set
        {
            this.placeOrderResultField = value;
        }
    }
}

/// <remarks/>
[System.Xml.Serialization.XmlTypeAttribute(AnonymousType = true, Namespace = "http://blah.co.uk")]
public partial class PlaceOrderResponsePlaceOrderResult
{

    private ErrorDetails errorDetailsField;

    private object idField;

    private object informationalMessagesField;

    private byte statusField;

    /// <remarks/>
    [System.Xml.Serialization.XmlElementAttribute(Namespace = "http://blah.co.uk/WebserviceMessage")]
    public ErrorDetails ErrorDetails
    {
        get
        {
            return this.errorDetailsField;
        }
        set
        {
            this.errorDetailsField = value;
        }
    }

    /// <remarks/>
    [System.Xml.Serialization.XmlElementAttribute(Namespace = "http://blah.co.uk/WebserviceMessage", IsNullable = true)]
    public object ID
    {
        get
        {
            return this.idField;
        }
        set
        {
            this.idField = value;
        }
    }

    /// <remarks/>
    [System.Xml.Serialization.XmlElementAttribute(Namespace = "http://blah.co.uk/WebserviceMessage")]
    public object InformationalMessages
    {
        get
        {
            return this.informationalMessagesField;
        }
        set
        {
            this.informationalMessagesField = value;
        }
    }

    /// <remarks/>
    [System.Xml.Serialization.XmlElementAttribute(Namespace = "http://blah.co.uk/WebserviceMessage")]
    public byte Status
    {
        get
        {
            return this.statusField;
        }
        set
        {
            this.statusField = value;
        }
    }
}

/// <remarks/>
[System.Xml.Serialization.XmlTypeAttribute(AnonymousType = true, Namespace = "http://blah.co.uk/WebserviceMessage")]
[System.Xml.Serialization.XmlRootAttribute(Namespace = "http://blah.co.uk/WebserviceMessage", IsNullable = false)]
public partial class ErrorDetails
{

    private ErrorDetail errorDetailField;

    /// <remarks/>
    [System.Xml.Serialization.XmlElementAttribute(Namespace = "http://blah.co.uk/Error")]
    public ErrorDetail ErrorDetail
    {
        get
        {
            return this.errorDetailField;
        }
        set
        {
            this.errorDetailField = value;
        }
    }
}

/// <remarks/>
[System.Xml.Serialization.XmlTypeAttribute(AnonymousType = true, Namespace = "http://blah.co.uk/Error")]
[System.Xml.Serialization.XmlRootAttribute(Namespace = "http://blah.co.uk/Error", IsNullable = false)]
public partial class ErrorDetail
{

    private string codeField;

    private string messageField;

    /// <remarks/>
    public string Code
    {
        get
        {
            return this.codeField;
        }
        set
        {
            this.codeField = value;
        }
    }

    /// <remarks/>
    public string Message
    {
        get
        {
            return this.messageField;
        }
        set
        {
            this.messageField = value;
        }
    }
}