For API purposes I need to ignore some fields based on criteria I receive. Usually I could use [ScriptIgnore] attribute to do this.
But how I can ignore fields dynamically (based on some conditionals)?
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2 Answers
Use JsonIgnore attribute available in Newtonsoft.Json package.
then, if you want it to be dynamically conditional, see ShouldSerialize
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Assuming you use Json.Net, you can create your own converter for a specific type by creating a class that inherits from JsonConverter.
public class MyJsonConverter : JsonConverter
{
public override bool CanConvert(Type objectType)
{
return objectType == typeof(MyType);
}
public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
{
throw new NotImplementedException();
}
public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
{
var objectToSerialize = new {}; //create the object you want to serialize here, based on your dynamic conditions
new JsonSerializer().Serialize(writer, objectToSerialize); //serialize the object to the current writer
}
}
Then you call JsonConvert.DeserializeObject and pass it your custom converter:
JsonConvert.DeserializeObject<MyType>(jsonString, new MyJsonConverter());
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