'System.Text.JSON doesn't deserialize what Newtonsoft does

I have a json that the new System.Text.Json.JsonSerializer.Deserialize<T>(json_data) serialize as List<T> with the correct numbers of elements, but then the objects inside have all the values null or 0

Same json with Newtonsoft.Json.JsonConvert.DeserializeObject<T>(json_data) is correctly filled.

Class:

public class SensorValue
    {
        public string StationCode { get; set; }
        public string SensorCode { get; set; }
        public string SensorNameIt { get; set; }
        public string SensorNameDe { get; set; }
        public string SensorNameLd { get; set; }
        public string SensorUnitMeasure { get; set; }
        public DateTime SamplingDateTime { get; set; }
        public Decimal SamplingValue { get; set; }
    }

JSON

[{"stationCode":"89190MS","sensorCode":"LT","sensorNameIt":"Temperatura dell´aria","sensorNameDe":"Lufttemperatur","sensorNameLd":"Temperatura dl’aria","sensorUnitMeasure":"°C","samplingDateTime":"2019-11-15T15:10:00","samplingValue":0.3},{"stationCode":"89190MS","sensorCode":"N","sensorNameIt":"Precipitazioni","sensorNameDe":"Niederschlag","sensorNameLd":"plueia","sensorUnitMeasure":"mm","samplingDateTime":"2019-11-15T15:10:00","samplingValue":0.4},{"stationCode":"89190MS","sensorCode":"WR","sensorNameIt":"Direzione del vento","sensorNameDe":"Windrichtung","sensorNameLd":"Direzion dl vënt","sensorUnitMeasure":"° ","samplingDateTime":"2019-11-15T15:10:00","samplingValue":165.7},{"stationCode":"89190MS","sensorCode":"WG","sensorNameIt":"Velocità del vento","sensorNameDe":"Windgeschwindigkeit","sensorNameLd":"Slune dl vënt","sensorUnitMeasure":"m/s","samplingDateTime":"2019-11-15T15:10:00","samplingValue":0.7},{"stationCode":"89190MS","sensorCode":"WG.BOE","sensorNameIt":"Velocitá raffica","sensorNameDe":"Windgeschwindigkeit Böe","sensorNameLd":"Slune dl vënt","sensorUnitMeasure":"m/s","samplingDateTime":"2019-11-15T15:10:00","samplingValue":1.3},{"stationCode":"89190MS","sensorCode":"LF","sensorNameIt":"Umidità relativa","sensorNameDe":"relative Luftfeuchte","sensorNameLd":"Tume relatif","sensorUnitMeasure":"%","samplingDateTime":"2019-11-15T15:10:00","samplingValue":100.0},{"stationCode":"89190MS","sensorCode":"LD.RED","sensorNameIt":"Pressione atmosferica","sensorNameDe":"Luftdruck","sensorNameLd":"Druch dl’aria","sensorUnitMeasure":"hPa","samplingDateTime":"2019-11-15T15:10:00","samplingValue":1006.9},{"stationCode":"89190MS","sensorCode":"GS","sensorNameIt":"Radiazione globale ","sensorNameDe":"Globalstrahlung","sensorNameLd":"Nraiazion globala ","sensorUnitMeasure":"W/m²","samplingDateTime":"2019-11-15T15:10:00","samplingValue":3.8},{"stationCode":"89190MS","sensorCode":"SD","sensorNameIt":"Durata soleggiamento","sensorNameDe":"Sonnenscheindauer","sensorNameLd":"Dureda dl surëdl","sensorUnitMeasure":"s","samplingDateTime":"2019-11-15T15:10:00","samplingValue":0.0}]

Any help ? consoleapp project .net core 3.0.0 newtonsoft 12.0.3

enter image description here

c++sharpjsonsystem.text.json


Solution 1:[1]

For setting globally, in startup.cs set

    services.AddControllers(options =>
    {
    }).AddJsonOptions(options =>
    {
        options.JsonSerializerOptions.PropertyNameCaseInsensitive = true;
        options.JsonSerializerOptions.Encoder = JavaScriptEncoder.Default;
    });

Solution 2:[2]

You can also apply JsonPropertyName attributes to the model properties.

[JsonPropertyName("yourSourceJsonKey")]
public string YourPropertyName { get; set; }

https://docs.microsoft.com/en-us/dotnet/standard/serialization/system-text-json-customize-properties#customize-individual-property-names

This article describes the behaviour of the serialiser:

https://docs.microsoft.com/en-us/dotnet/standard/serialization/system-text-json-how-to?pivots=dotnet-core-3-1#serialization-behavior

Solution 3:[3]

if (response.IsSuccessStatusCode)
{
   var json = await response.Content.ReadAsStringAsync();

   var options = new JsonSerializerOptions
   {
       WriteIndented = true,
       PropertyNameCaseInsensitive = true // this is the point
   };

   var books = JsonSerializer.Deserialize<IEnumerable<Book>>(json, options);
}

Solution 4:[4]

I had a problem getting default values instead of real ones. When I forgot to add an identifier to the properties of the model in the current project (set). Prior to using serialization/deserialization, only the identifier (get) was required for properties in the model. But for me both libraries (System.Text.Json and NewtonSoft )returned the default value. This is not the case of the topic starter.

Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution Source
Solution 1
Solution 2 John
Solution 3 Felipe Augusto
Solution 4 PhiseySt

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