C# · 12月 29, 2021

c# – 使用XmlArray反序列化xml文件?

我试图反序列化这个xml结构. <?xml version=”1.0″?><DietPlan> <Health> <Fruit>Test</Fruit> <Fruit>Test</Fruit> <Veggie>Test</Veggie> <Veggie>Test</Veggie> </Health></DietPlan>

我试过:

[Serializable][XmlRoot(ElementName = “DietPlan”)]public class TestSerialization{ [XmlArray(“Health”)] [XmlArrayItem(“Fruit”)] public string[] Fruits { get; set; } [XmlArray(“Health”)] [XmlArrayItem(“Veggie”)] public string[] Veggie { get; set; }}

但是这会抛出一个异常“XML元素已经存在于当前作用域中,使用XML属性为该元素指定另一个XML名称或命名空间.
感谢adv.

解决方法 您需要一个通用类型才能反序列化您的XML,并且您可以使用[XmlElement]命名空间定义根据元素名称实例化的类型,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); } }}