gistfile1.cs

public class IgnoreFieldContractResolver : DefaultContractResolver
{
  public IgnoreFieldContractResolver() { }
  
  public IgnoreFieldContractResolver(string fieldToIgnore)
  {
    FieldToIgnore = fieldToIgnore;
  }
  public string FieldToIgnore { get; set; }
  protected override IList<JsonProperty> CreateProperties(Type type, MemberSerialization memberSerialization)
  {
    if (string.IsNullOrWhiteSpace(FieldToIgnore))
    {
      throw new InvalidOperationException("FieldToIgnore must be non-null and not-empty.");
    }
    return (from x in base.CreateProperties(type, memberSerialization)
            where x.PropertyName != FieldToIgnore
            select x).ToList();
  }
}