Serialize Objects using xmlSerializer.Serialize and IEnumerable objects

Question

I have an object that holds an object that is definded as IEnumerable, i.e.

[Serializable]
[XmlRoot(\"MyObject\")]
public class MyObject
{
    [XmlAttribute]         


        

Answer 1

In general terms, you should use Collection if you intend users of your class to be free to modify it, or ReadOnlyCollection if you do not. It is not recommended to use List in public interfaces (source).

However, as this class is for XML Serialization and thus presumably isn't used for any purpose other than representing XML as an object model, the rules don't really apply in the same way as a 'normal' API because it will have no consumers other than the XmlSerializer, and so it doesn't really matter that much what you use. I'd probably still stick to the recommendations though.