👀 Views: 3 💬 Answers: 1 📅 Created: 2025-06-11

xml serialization c#

I'm facing an issue with XML serialization when trying to serialize a list of objects in C#. I've defined a class that contains a list property, and while the main object gets serialized correctly, the list elements are somehow being omitted from the output XML. Here's the class definition I’m working with: ```csharp public class Order { public int OrderId { get; set; } public string CustomerName { get; set; } [XmlArray("Items")] [XmlArrayItem("Item")] public List<Item> Items { get; set; } } public class Item { public string ProductName { get; set; } public int Quantity { get; set; } } ``` I've been using the `XmlSerializer` to handle the serialization: ```csharp var order = new Order { OrderId = 1, CustomerName = "John Doe", Items = new List<Item> { new Item { ProductName = "Widget", Quantity = 5 }, new Item { ProductName = "Gadget", Quantity = 3 } } }; var serializer = new XmlSerializer(typeof(Order)); using (var stringWriter = new StringWriter()) { serializer.Serialize(stringWriter, order); var xmlOutput = stringWriter.ToString(); Console.WriteLine(xmlOutput); } ``` When I run this code, the output XML only includes the `OrderId` and `CustomerName` attributes. The `Items` array is completely missing from the serialized output. I double-checked that the `Items` property is being initialized, so it should have data. I've also tried different variations of `XmlArray` and `XmlArrayItem` attributes, but they don’t seem to resolve the issue. Additionally, I'm using .NET 5.0, and I need the XML to conform to specific formatting requirements due to API integration. Is there something I'm missing in the serialization process, or do I need to configure the `XmlSerializer` differently? Any suggestions would be greatly appreciated!