What is the input for JsonSerializer.Deserialize method which causes a null return value?

Asked Feb 09 '23 at 08:42

Active Feb 09 '23 at 08:54

Viewed 34 times

I have a simple JSON object which look like the following in sunny day scenario:

{
  "JsonProp1": "4ADx4ADx",
  "JsonProp2": "4AH/4ADx",
  "JsonProp3": "4AKq4ADx"
}

I have also implemented a class for that.

internal class JsonData
{
    public JsonData(byte[] jsonProp1 , byte[] jsonProp2 , byte[] jsonProp3) 
        {
            JsonProp1 = jsonProp1;
            JsonProp2 = jsonProp2;
            JsonProp3 = jsonProp3; 
        }
        public byte[] JsonProp1 { get; set; }

        public byte[] JsonProp2 { get; set; }

        public byte[] JsonProp3 { get; set; }
}

My question would be the following: what would be the input parameter for the deserializer to retrive null?

JsonData? jsonData= JsonSerializer.Deserialize<JsonData>(InputJson);

In case the input is wrong (e.q. not json format) it throws an exception. If the input is correct syntactically but not compatible it return with JsonData but properties are null.

asked Feb 09 '23 at 08:42

THE_GREAT_MARKER

1

If `InputJson` was the string `"null"`. – Johnathan Barclay Feb 09 '23 at 08:47
If you make your setters `private` then the result shall be `null`. There are many instances why you can get a null. The question is (if I mat ask) why do you want to know? – FortyTwo Feb 09 '23 at 08:49
1

@FortyTwo The property setters are irrelevant. The JSON value `null` is the only thing that will cause `jsonData` to be null. – Johnathan Barclay Feb 09 '23 at 08:50
@FortyTwo it is not true, I have tried it. But now I see that the question is duplicated. Sorry for that. – THE_GREAT_MARKER Feb 09 '23 at 12:54
@JohnathanBarclay Than you for the answer! – THE_GREAT_MARKER Feb 09 '23 at 12:54

What is the input for JsonSerializer.Deserialize method which causes a null return value?

0 Answers0