. net -省略JSON Web服务调用中的字段

我正在为我的公司开发一个。net应用程序，以便与Nutshell CRM进行交互。他们在这里为JSON API提供了文档。我正在慢慢地构建应用程序中的所有类，但是我遇到了只需要在调用中更新一个字段的问题，但是让应用程序包含我在该类上拥有的每个字段。

对于editLead方法的浓缩示例，我只修改customFields:

Nutshell文档说明所有字段都是可选的。我的类设置如下，其中我在Nutshell中的自定义字段是Division, Product, Country:

    public class editLead
    {
          public Customfields customFields { get; set; }
    }
    public class Customfields
    {
        public string Division { get; set; }
        public string Product { get; set; }
        public string Country { get; set; }
    }

EDIT(添加更多代码):

    [DataContract(Name = "params")]
    public class EditLeadParams
    {
        public string leadId { get; set; }
        public editLead lead { get; set; }
        public string rev { get; set; }
    }

我正在使用RestSharp进行以下调用:

            var editleadclient = new RestClient();
            Method editleadMethod = new Method();
            editleadMethod = Method.POST;
            var editleadrequest = new RestRequest(editleadMethod);
            editleadrequest.RequestFormat = DataFormat.Json;
            editleadclient.BaseUrl = new Uri(apiuri);
            editleadrequest.Credentials = new NetworkCredential(login, apikey);
            leadJSON.EditLeadParams lead1 = new leadJSON.EditLeadParams()
            {
                leadId = foundlead[0],
                lead = new leadJSON.editLead()
                {
                    customFields = new leadJSON.Customfields()
                    {
                        Division = "AMERICAS",
                    }
                },
                rev = foundlead[1],
            };
            leadJSON.EditLeadRequest editreq = new leadJSON.EditLeadRequest()
            {
                @params = lead1,
                method = "editLead",
            };
            editleadrequest.AddBody(editreq);
            IRestResponse editResponse = editleadclient.Execute(editleadrequest);

如果我只想更新Division，它将使用以下JSON {"customFields":{"Division":"AMERICAS","Product":null,"Country":null}}，并覆盖Product和Country字段并使其为空。但是，如果我在Customfields定义中注释掉Product和Country，它将更新Division，而单独保留Product和Country。

是否有另一种方法来定义这些类，以便我可以定义所有的类，但只更新需要的?

//JsonSerializer.cs
public static class JsonSerializer
{
    public static string Serialize(object target, bool ignoreNulls = true)
    {
        var javaScriptSerializer = new JavaScriptSerializer();
        if (ignoreNulls)
        {
            javaScriptSerializer.RegisterConverters(new[] 
            {
                new NullExclusionConverter(target)
            });
        }
        return javaScriptSerializer.Serialize(target);
    }
}

//NullExclusionConverter.cs
public class NullExclusionConverter : JavaScriptConverter
{
    private readonly Type _type;
    public NullExclusionConverter(object target)
    {
        if (target == null)
        {
            throw new ArgumentNullException("target");
        }
        this._type = target.GetType();
    }

    public override object Deserialize(IDictionary<string, object> dictionary, Type type, JavaScriptSerializer serializer)
    {
        throw new NotImplementedException();
    }
    public override IEnumerable<Type> SupportedTypes
    {
        get 
        { 
            return new[] { this._type };
        }
    }
    public override IDictionary<string, object> Serialize(object obj, JavaScriptSerializer serializer)
    {
        var result = new Dictionary<string, object>();
        if (obj == null)
        {
            return result;
        }
        var properties = obj.GetType().GetProperties();
        foreach (var propertyInfo in properties)
        {
            //Use propertyInfo.Name to exclude a specific property name
            if (propertyInfo.GetValue(obj, null) == null)
            {
                continue;
            }
            result.Add(propertyInfo.Name, propertyInfo.GetValue(obj, null));
        }
        return result;
    }
}

string jsonString = JsonSerializer.Serialize(objectToSerialize);

editleadrequest.JsonSerializer.Options = new SerializerOptions()
{
    SkipNullProperties = true
};