Why a class does not implement ISerializable interface violates MissingSerializationConstructorRule

Question

We have sonar reports that says many of the classes in our projects violates the MissingSerializationConstructorRule, however neither the class nor its base class implement any of the Iserializable interface, anyone has any idea why?

for example, sonar says:

public class CommentPage : RmdsPublicationPage, ICommentPage 
    { 
 *MissingSerializationConstructorRule    
 The required constructor for ISerializable is not present in this type.* 
    public CommentPage() 
    { 
        this["COMMENTTXT"] = null; 

where the corresponding class is

public class CommentPage : RmdsPublicationPage, ICommentPage
{
    public CommentPage()
    {
        // do something
    }
    public void Update(string comment)
    {
        //something else
    }
}

Two interfaces does not implement ISerializable either, i.e.

public class RmdsPublicationPage : Dictionary<string, object>, IRmdsPublicationPage

public interface IRmdsPublicationPage : IDictionary<string, object>, IDisposable

Answer 1

Dictionary(TKey, TValue) implements ISerializable

[SerializableAttribute]
[ComVisibleAttribute(false)]
public class Dictionary<TKey, TValue> : IDictionary<TKey, TValue>, 
    ICollection<KeyValuePair<TKey, TValue>>, IDictionary, ICollection, 
    IReadOnlyDictionary<TKey, TValue>, IReadOnlyCollection<KeyValuePair<TKey, TValue>>, 
    IEnumerable<KeyValuePair<TKey, TValue>>, IEnumerable, ISerializable, 
    IDeserializationCallback