/// <summary>
/// This does NOT go into sub objects, only the top level object
/// i.e. if you have a class with a string field, it will trim that string field value
/// but not trim any string fields on sub-objects inside the containing class
/// </summary>
/// <param name="currentObject"></param>
        public static void SafeTrimAllStringFields(this object currentObject)
        {
            if (currentObject == null)
            {
                return;
            }

            var type = currentObject.GetType();
            var stringFields = type.GetFields(BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic)
                .Where(f => f.FieldType == typeof(string));

            foreach (var field in stringFields)
            {
                var value = (string)field.GetValue(currentObject);
                if (value != null)
                {
                    field.SetValue(currentObject, value.SafeTrim());
                }
            }
        }
 }

   public static string SafeTrim(this string value)
        {
            return value == null ? string.Empty : value.Trim();
        }