C# 使用XmlArray反序列化xml文件？

我正在尝试反序列化这个xml结构

<?xml version="1.0"?>
<DietPlan>
    <Health>
        <Fruit>Test</Fruit>
        <Fruit>Test</Fruit>
        <Veggie>Test</Veggie>
        <Veggie>Test</Veggie>
    </Health>
</DietPlan>

但这引发了一个异常“XML元素已存在于当前作用域中。请使用XML属性为元素指定另一个XML名称或命名空间。”

---

感谢adv.

您需要一个通用类型来反序列化XML，并且使用它，您可以使用

[xmlement]

名称空间根据元素的名称定义要实例化的类型，如下所示

public class StackOverflow_15907357
{
    const string XML = @"<?xml version=""1.0""?>
                        <DietPlan>
                            <Health>
                                <Fruit>Test</Fruit>
                                <Fruit>Test</Fruit>
                                <Veggie>Test</Veggie>
                                <Veggie>Test</Veggie>
                            </Health>
                        </DietPlan>";

    [XmlRoot(ElementName = "DietPlan")]
    public class TestSerialization
    {
        [XmlArray("Health")]
        [XmlArrayItem("Fruit", Type = typeof(Fruit))]
        [XmlArrayItem("Veggie", Type = typeof(Veggie))]
        public Food[] Foods { get; set; }
    }

    [XmlInclude(typeof(Fruit))]
    [XmlInclude(typeof(Veggie))]
    public class Food
    {
        [XmlText]
        public string Text { get; set; }
    }

    public class Fruit : Food { }
    public class Veggie : Food { }

    public static void Test()
    {
        MemoryStream ms = new MemoryStream(Encoding.UTF8.GetBytes(XML));
        XmlSerializer xs = new XmlSerializer(typeof(TestSerialization));
        TestSerialization obj = (TestSerialization)xs.Deserialize(ms);
        foreach (var food in obj.Foods)
        {
            Console.WriteLine("{0}: {1}", food.GetType().Name, food.Text);
        }
    }
}

公共类StackOverflow_15907357
{
常量字符串XML=@“
试验
试验
试验
试验
";
[XmlRoot（ElementName=“DietPlan”）]
公共类TestSerialization
{
[XmlArray（“健康”）]
[XmlArrayItem（“水果”，Type=typeof（水果））]
[XmlArrayItem（“素食者”，Type=typeof（素食者））]
公共食品[]食品{get；set；}
}
[xmlclude（类型（水果））]
[xmlclude（类型（素食））]
公共食品
{
[XmlText]
公共字符串文本{get；set；}
}
公共类水果：食品{}
公共类素食者：食物{}
公共静态无效测试（）
{
MemoryStream ms=新的MemoryStream（Encoding.UTF8.GetBytes（XML））；
XmlSerializer xs=新的XmlSerializer（typeof（TestSerialization））；
TestSerialization obj=（TestSerialization）xs.反序列化（ms）；
foreach（对象食品中的变量食品）
{
WriteLine（“{0}:{1}”，food.GetType（）.Name，food.Text）；
}
}
}

public class StackOverflow_15907357
{
    const string XML = @"<?xml version=""1.0""?>
                        <DietPlan>
                            <Health>
                                <Fruit>Test</Fruit>
                                <Fruit>Test</Fruit>
                                <Veggie>Test</Veggie>
                                <Veggie>Test</Veggie>
                            </Health>
                        </DietPlan>";

    [XmlRoot(ElementName = "DietPlan")]
    public class TestSerialization
    {
        [XmlArray("Health")]
        [XmlArrayItem("Fruit", Type = typeof(Fruit))]
        [XmlArrayItem("Veggie", Type = typeof(Veggie))]
        public Food[] Foods { get; set; }
    }

    [XmlInclude(typeof(Fruit))]
    [XmlInclude(typeof(Veggie))]
    public class Food
    {
        [XmlText]
        public string Text { get; set; }
    }

    public class Fruit : Food { }
    public class Veggie : Food { }

    public static void Test()
    {
        MemoryStream ms = new MemoryStream(Encoding.UTF8.GetBytes(XML));
        XmlSerializer xs = new XmlSerializer(typeof(TestSerialization));
        TestSerialization obj = (TestSerialization)xs.Deserialize(ms);
        foreach (var food in obj.Foods)
        {
            Console.WriteLine("{0}: {1}", food.GetType().Name, food.Text);
        }
    }
}