Is there some way to set what the default representation for null values should be in Json.NET? More specifically null values inside an array.
Given the class
public class Test
{
public object[] data = new object[3] { 1, null, "a" };
}
Then doing this
Test t = new Test();
string json = JsonConvert.SerializeObject(t);
Gives
{"data":[1,null,"a"]}
Is it possible to make it look like this?
{"data":[1,,"a"]}
Without using string.Replace.
Figured it out. I had to implement a custom JsonConverter. As others mentioned this will not produce valid/standard Json.
public class ObjectCollectionConverter : JsonConverter
{
public override bool CanConvert(Type objectType)
{
return objectType == typeof(object[]);
}
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)
{
object[] collection = (object[])value;
writer.WriteStartArray();
foreach (var item in collection)
{
if (item == null)
{
writer.WriteRawValue(""); // This procudes "nothing"
}
else
{
writer.WriteValue(item);
}
}
writer.WriteEndArray();
}
}
Use it like this
Test t = new Test();
string json = JsonConvert.SerializeObject(t, new ObjectCollectionConverter());
{"data":[1,,"a"]}is not a valid json.{"data":[1,0,"a"]}be valid Json?JSON.parseon your browser console and get a guaranteed correct answer directly.