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Handling Circular References in XML Serialization with System.Xml.Serialization in C#

👀 Views: 100 💬 Answers: 1 📅 Created: 2025-06-05
c# xml serialization C#

I'm learning this framework and I'm learning this framework and I'm migrating some code and I'm confused about I'm relatively new to this, so bear with me....... I'm working with an scenario with circular references while serializing an object graph into XML using `System.Xml.Serialization` in C#. My objects reference each other, which causes a `StackOverflowException` during serialization. Here's a simplified version of my classes: ```csharp public class Person { public string Name { get; set; } public List<Friend> Friends { get; set; } } public class Friend { public string Name { get; set; } public Person BestFriend { get; set; } } ``` When I try to serialize a `Person` object that has a `List` of `Friend` objects, each of which has a reference back to the `Person`, I end up getting this behavior: ``` Unhandled exception. System.StackOverflowException: The operation has timed out. ``` I’ve tried using the `[XmlIgnore]` attribute on the `BestFriend` property, hoping it would help with the circular reference, but then I lose that data in the XML output. I also considered using a custom serialization approach, but I want to keep it simple and leverage `XmlSerializer`. Is there a recommended way to handle this situation without losing essential data or working with performance optimization? Any guidance on best practices would be greatly appreciated! My development environment is Ubuntu. This is part of a larger web app I'm building. I'm using C# 3.10 in this project. Is this even possible? Am I missing something obvious?