Hi,

We are having collection classes that are hierarchical in nature. The child collections are implemented based on IList which inturn using ICollection, for gathering the related objects.

The parent entity will have the references of the child collections. So we can have hierarchical data collections for implementation.

The issue is when I serialize the collection I can able to do it and I can able to see all the child collections with in the output xml file. But When I try to deserialize the same xml file, I'm getting the following error.

I'm using XMLSerializer for seralizing and deserializing the collections.

Error : {"Could not deserialize global::System.Collections.IList. Parameterless constructor is required for collections and enumerators."}

I could not able to find where is the actual problem is, all my collection classes and entities are having the parameterless constructor within it.

Appriciated if any help on this space.

Thanks in advance.

IList's cannot be serialized/deserialized.

Short awnser is that it's because it is an interface.

The workaround that I had to implement was to use a base class and two parent classes -- one with IList and one with List.

I serialized the IList and used the class with List to deserialize with.

Hi Joe,

Thanks for the reply,

So, do I need to create all the entities with List implementation for the purpose of deserialization? why I'm asking is I'm having 60 classes in my framework, it is too huge in creating the same items with different implementation, when we consider for maintenance it is more complex in maintaing the changes in both the places.

Anyways this is one approach, is there any other workaround for this?

Any help on this regard is highly appreciated.