Question

我正在尝试使用公共类反序列化自定义配置键。反序列化的对象属性具有null值。有人可以指导我正确使用xml覆盖。

我已在此处粘贴代码，以便在控制台应用中尝试。

public class Program
{
    private static void Main(string[] args)
    {
        var documentPropertyMapping =
            GetCustomSectionSettingList<CustomSectionConfigElement>("abc/xyz",
                "Activity", "value", "Function").ToDictionary(x => x.Key, x => x.Value);
            }

    private static List<T> GetCustomSectionSettingList<T>(string sectionName, string elementName, string keyAttributeName,
        string valueAttributeName) where T : new()
    {
        var xml = @"<root><abc>
    <xyz>
        <Activity value = ""a Document"" Function = ""a Documentation"" />
        <Activity value = ""b Document"" Function = ""a Documentation"" />
    </xyz>
</abc></root>";
        var settings = new List<T>();
        var configDoc = XElement.Parse(xml);

        var xOver = new XmlAttributeOverrides();
        {
            var attrs = new XmlAttributes();
            var root = new XmlRootAttribute(elementName);
            attrs.XmlRoot = root;
            xOver.Add(typeof (T), attrs);
        }
        {
            var attrs = new XmlAttributes();
            var attribute = new XmlElementAttribute(keyAttributeName);
            attrs.XmlElements.Add(attribute);
            xOver.Add(typeof (T), "Key", attrs);
        }
        {
            var attrs = new XmlAttributes();
            var attribute = new XmlElementAttribute();
            attribute.ElementName = valueAttributeName;
            attrs.XmlElements.Add(attribute);
            xOver.Add(typeof (T), "Value", attrs);
        }

        var serializer = new XmlSerializer(typeof (T), xOver);
        foreach (var sectionXml in configDoc.XPathSelectElements(sectionName))
        {
            foreach (var elem in sectionXml.Elements())
                settings.Add((T) serializer.Deserialize(elem.CreateReader()));
        }
        return settings;
    }

    #region custom section

    public class CustomSectionConfigElement
    {
        public string Key { get; set; }
        public string Value { get; set; }
    }

    #endregion custom section
}

Answer 1

问题是您使用的是XmlElementAttribute而不是XmlAttributeAttribute。第一个意味着字段或属性被序列化为嵌套的XML 元素，第二个意味着封闭的XMl元素的属性。

因此覆盖应该如下所示：

{
    var attrs = new XmlAttributes();
    attrs.XmlAttribute = new XmlAttributeAttribute(keyAttributeName);
    xOver.Add(typeof (T), "Key", attrs);
}
{
    var attrs = new XmlAttributes();
    attrs.XmlAttribute = new XmlAttributeAttribute(valueAttributeName);
    xOver.Add(typeof (T), "Value", attrs);
}

请注意，您的原始代码适用于XML，如下所示：

<Activity>
    <value>a Document</value>
    <Function>a Documentation</Function>
</Activity>

如何在c＃中使用XmlAttributeOverrides进行反序列化

1 个答案: