Makes an event from the provided command - see gregory young's stuff on CQRS

MakeEvent from Command

protected TE MakeEvent<TE>(Command command)
            where TE : Event
        {
            return MakeEvent<TE>(command, new List<object>());
        }

        private TE MakeEvent<TE>(Command command, IEnumerable<object> additionalParams)
            where TE : Event
        {
            var type = typeof(TE);
            ConstructorInfo constructorInfo = type.GetConstructors().Where(t => t.GetParameters().Any()).ToList().SingleOrDefault();
            if (constructorInfo == null) return Activator.CreateInstance<TE>();

            List<string> ctrVariableNames = constructorInfo.GetParameters().Select(p => p.Name).ToList();

            var commandType = command.GetType();
            var commandFields = commandType.GetFields();
            var fieldInfos = commandFields.Where(f => ctrVariableNames.Contains(ToCamelCase(f.Name)));

            List<object> parameters = fieldInfos.Select(fieldInfo => fieldInfo.GetValue(command)).ToList();
            parameters.AddRange(additionalParams);

            return (TE)Activator.CreateInstance(type, parameters.ToArray());
        }       

        private string ToCamelCase(string text)
        {
            var firstCharacter = text[0].ToString().ToLower();
            return firstCharacter + text.Substring(1, text.Length - 1);
        }