Using to ValidationException to identity the property causing the initial exception

Hi Guys

We're still using an older version of Lightspeed 4.0.1688 and I'm trying to identify what entity & column is causing the ValidationException.

The entity I'm saving is rather big, it has a N'th degree of children and they have a N'th degree of children, and the most I'm getting out of the exception is a very "usefull" tree of entities that's invalid, but not the actual culprit.

I've tried traversing the validationException.Entity.Errors and their ChildErrors but just end up with a recursive loop.

Any suggestions welcome.

Had a look at the source code to see how a ValidationException is created, below is my own formatter, to dumb it down and get more detail out of it.

    public static string Format(ValidationException validationException)
    {
        var sb = new StringBuilder();

        sb.AppendLine("Lightspeed validation error.");

        var visited = new List<Entity>();

        if (validationException.Entity != null)
            BuildErrorMessage(validationException.Entity, sb, visited, 0);

        return sb.ToString();
    }

    private static void BuildErrorMessage(Entity entity, StringBuilder message, ICollection<Entity> visited, int indent)
    {
        if ((entity == null) || visited.Contains(entity))
        {
            return;
        }

        visited.Add((entity));

        foreach (var validationError in entity.Errors)
        {
            // skip over the jargon
            if (!validationError.ErrorMessage.Contains("invalid"))
            {
                message.Append(string.Empty.PadLeft(indent*2));
                message.AppendLine(validationError.ToString());

                message.AppendLine(string.Format("\tEntity: {0} Property: {1} Rule: {2}-{3} | Error: {4}", entity,
                    validationError.PropertyName,
                    validationError.Rule, validationError.RuleType, validationError.ErrorMessage));
            }

            indent++;

            BuildErrorMessage(validationError.AssociatedEntity, message, visited, indent);

            indent--;
        }
    }