Examples of errors detected by the V3097 diagnostic

V3097. Possible exception: type marked by [Serializable] contains non-serializable members not marked by [NonSerialized].

Open XML SDK

V3097 Possible exception: type marked by [Serializable] contains non-serializable members not marked by [NonSerialized]. OpenXmlPackageValidationEventArgs.cs 15

 [Serializable] [Obsolete(ObsoleteAttributeMessages.ObsoleteV1ValidationFunctionality, false)] [EditorBrowsable(EditorBrowsableState.Never)] public sealed class OpenXmlPackageValidationEventArgs : EventArgs { private string _message; [NonSerialized] private readonly object _sender; [NonSerialized] private OpenXmlPart _subPart; [NonSerialized] private OpenXmlPart _part; .... internal DataPartReferenceRelationship DataPartReferenceRelationship { get; set; } // <= } 

Accord.Net

V3097 Possible exception: the 'DenavitHartenbergNode' type marked by [Serializable] contains non-serializable members not marked by [NonSerialized]. Accord.Math DenavitHartenbergNode.cs 77

 public class DenavitHartenbergNodeCollection : Collection<DenavitHartenbergNode> { .... } [Serializable] public class DenavitHartenbergNode { .... public DenavitHartenbergNodeCollection Children { get; private set; } .... }