C# XML反序列化问题

我正在寻找一种使用C的方法，我可以将下面的XML反序列化为一个类。我可以用XmlDocument.LoadXml（）读取它，但我想将它反序列化到对象中

我尝试对对象使用XmlSerializer：

[XmlRoot(ElementName = "properties", Namespace = "http://schemas.microsoft.com/ado/2007/08/dataservices/metadata") ]
public class MyDto
{
    [XmlElement(ElementName = "ObjectID", Namespace = "http://schemas.microsoft.com/ado/2007/08/dataservices")]
    public string ObjectID { get; set; }
    public string ContactID { get; set; }
}

我的代码（内存流中充满了xml）：

但是我弄错了 System.InvalidOperationException:XML文档（0，0）中存在错误。-->System.Xml.XmlException:缺少根元素

<?xml version="1.0" encoding="utf-8"?>
<Content type="application/xml">
 <m:properties xmlns:m="http://schemas.microsoft.com/ado/2007/08/dataservices/metadata">
  <d:ObjectID xmlns:d="http://schemas.microsoft.com/ado/2007/08/dataservices">920D2</d:ObjectID>
  <d:ContactID xmlns:d="http://schemas.microsoft.com/ado/2007/08/dataservices">99999</d:ContactID>
 </m:properties>
</Content>

920D2
99999

您的

XmlSerializer

类对象完全错误，或者不适合您的XML

您可以从

试试下面的类对象

[XmlRoot("ObjectID", Namespace = "http://schemas.microsoft.com/ado/2007/08/dataservices")]
public class ObjectID
{
    [XmlAttribute("d", Namespace = "http://www.w3.org/2000/xmlns/")]
    public string D { get; set; }
    [XmlText]
    public string Text { get; set; }
}

[XmlRoot("ContactID", Namespace = "http://schemas.microsoft.com/ado/2007/08/dataservices")]
public class ContactID
{
    [XmlAttribute("d", Namespace = "http://www.w3.org/2000/xmlns/")]
    public string D { get; set; }
    [XmlText]
    public string Text { get; set; }
}

[XmlRoot("properties", Namespace = "http://schemas.microsoft.com/ado/2007/08/dataservices/metadata")]
public class Properties
{
    [XmlElement("ObjectID", Namespace = "http://schemas.microsoft.com/ado/2007/08/dataservices")]
    public ObjectID ObjectID { get; set; }
    [XmlElement("ContactID", Namespace = "http://schemas.microsoft.com/ado/2007/08/dataservices")]
    public ContactID ContactID { get; set; }
    [XmlAttribute("m", Namespace = "http://www.w3.org/2000/xmlns/")]
    public string M { get; set; }
}

[XmlRoot("Content")]
public class MyDto
{
    [XmlElement("properties", Namespace = "http://schemas.microsoft.com/ado/2007/08/dataservices/metadata")]
    public Properties Properties { get; set; }
    [XmlAttribute("type")]
    public string Type { get; set; }
}

输出：

---

我认为您的问题在于XML有一个根元素内容，XMLSerializer对此一无所知。错误表明memorystream没有与您发布的相同的XML文件，或者XML不是当前位置的根元素。在填充内存流之后，您必须在读取XmlReader之前将位置设置为零。谢谢，类对象是主要原因！

[XmlRoot("ObjectID", Namespace = "http://schemas.microsoft.com/ado/2007/08/dataservices")]
public class ObjectID
{
    [XmlAttribute("d", Namespace = "http://www.w3.org/2000/xmlns/")]
    public string D { get; set; }
    [XmlText]
    public string Text { get; set; }
}

[XmlRoot("ContactID", Namespace = "http://schemas.microsoft.com/ado/2007/08/dataservices")]
public class ContactID
{
    [XmlAttribute("d", Namespace = "http://www.w3.org/2000/xmlns/")]
    public string D { get; set; }
    [XmlText]
    public string Text { get; set; }
}

[XmlRoot("properties", Namespace = "http://schemas.microsoft.com/ado/2007/08/dataservices/metadata")]
public class Properties
{
    [XmlElement("ObjectID", Namespace = "http://schemas.microsoft.com/ado/2007/08/dataservices")]
    public ObjectID ObjectID { get; set; }
    [XmlElement("ContactID", Namespace = "http://schemas.microsoft.com/ado/2007/08/dataservices")]
    public ContactID ContactID { get; set; }
    [XmlAttribute("m", Namespace = "http://www.w3.org/2000/xmlns/")]
    public string M { get; set; }
}

[XmlRoot("Content")]
public class MyDto
{
    [XmlElement("properties", Namespace = "http://schemas.microsoft.com/ado/2007/08/dataservices/metadata")]
    public Properties Properties { get; set; }
    [XmlAttribute("type")]
    public string Type { get; set; }
}