I'm trying to read this JSON array:

[{"name":"lc_cash","slot":1,"info":"","type":"item","amount":591},{"name":"advancedlockpick","slot":2,"info":[],"type":"item","amount":19}]

This is my code:

File Inventory.cs

class Item {
    [JsonProperty("name")]
    public string Name { get; set; }

    [JsonProperty("slot")]
    public int Slot { get; set; }

    [JsonProperty("info")]
    public object Info { get; set; }

    [JsonProperty("type")]
    public string Type { get; set; }

    [JsonProperty("amount")]
    public int Amount { get; set; }
}

class Inventory
{
    public List<Item> Item { get; set; }
}

File Form1.cs

Inventory inventory = new Inventory();
inventory = JsonSerializer.Deserialize<Inventory>(players.Inventory);

I'm getting this error:

System.Text.Json.JsonException: 'The JSON value could not be converted to Inventory. Path: $ | LineNumber: 0 | BytePositionInLine: 1.'

How can I read this correctly?

EDIT: testing with stackoverflow answers:

Main code:

List<Item> items = new List<Item>();
items = JsonSerializer.Deserialize<List<Item>>(players.Inventory);

Item class:

class Item {
    [JsonProperty("name")]
    public string Name { get; set; }

    [JsonProperty("slot")]
    public int Slot { get; set; }

    [JsonProperty("info")]
    public string Info { get; set; }

    [JsonProperty("type")]
    public string Type { get; set; }

    [JsonProperty("amount")]
    public int Amount { get; set; }
}

Result: It's not throwing exception anymore but reading only 0 and nill

CodePudding user response：

you will have to fix your json, one of the property info has value string, another has array. you have to select something one, string for example

var jsonParsed = JArray.Parse(json);

foreach (var item in jsonParsed)
{
if (((JObject)item)["info"].GetType().Name == "JArray")
 ((JObject)item)["info"] = string.Empty;
}

List<Item> items = jsonParsed.ToObject<List<Item>>();

result

[
  {
    "name": "lc_cash",
    "slot": 1,
    "info": "",
    "type": "item",
    "amount": 591
  },
  {
    "name": "advancedlockpick",
    "slot": 2,
    "info": "",
    "type": "item",
    "amount": 19
  }
]

CodePudding user response：

as long as the information here is right, you gave us a json array string. the inventory is an object with an array, so the simple solution will be this:

  Inventory inventory = new Inventory();
  inventory.Item = JsonSerializer.Deserialize<List<Item>>(players.Inventory);

important to mention that since Item is a list, you should use plural name