Question

All I am trying to do is

XmlSerializer serializer = new XmlSerializer(typeof(Stack<int>)); 

and I get the following at runtime:

System.InvalidOperationException: You must implement a default accessor on System.Collections.Generic.Stack`1 [[System.Int32, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]] because it inherits from ICollection.

Am I not supposed to serialize the Stack<int>?

Answer 1

Since the Stack class does not have a default accessor (by index for example) you cannot serialize it with that method.

I would suggest copying your stack to a List then serializing the list.

List<int> serializableLIst = new List<int>( myStack ); XmlSerializer serializer = new XmlSeralizer(typeof(List<int>)); 

See if that doesn’t work better.