In the WebApiConfig
:
config.Formatters.JsonFormatter.SerializerSettings =
new JsonSerializerSettings {NullValueHandling = NullValueHandling.Ignore};
Or, if you want more control, you can replace entire formatter:
var jsonformatter = new JsonMediaTypeFormatter
{
SerializerSettings =
{
NullValueHandling = NullValueHandling.Ignore
}
};
config.Formatters.RemoveAt(0);
config.Formatters.Insert(0, jsonformatter);