NewtonSoft add JSONIGNORE at runTime

Question

Am looking to Serialize a list using NewtonSoft JSON and i need to ignore one of the property while Serializing and i got the below code

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Answer 1

I think it would be best to use a custom IContractResolver to achieve this:

public class DynamicContractResolver : DefaultContractResolver
{
    private readonly string _propertyNameToExclude;

    public DynamicContractResolver(string propertyNameToExclude)
    {
        _propertyNameToExclude = propertyNameToExclude;
    }

    protected override IList CreateProperties(Type type, MemberSerialization memberSerialization)
    {
        IList properties = base.CreateProperties(type, memberSerialization);

        // only serializer properties that are not named after the specified property.
        properties =
            properties.Where(p => string.Compare(p.PropertyName, _propertyNameToExclude, true) != 0).ToList();

        return properties;
    }
}

The LINQ may not be correct, I haven't had a chance to test this. You can then use it as follows:

string json = JsonConvert.SerializeObject(car, Formatting.Indented,
   new JsonSerializerSettings { ContractResolver = new DynamicContractResolver("LastModified") });

Refer to the documentation for more information.