C#•17mo ago

❔ Get value out of deserialized json object.

I need to get value out of meta, from the "object". As for now I also use this: Dictionary<string, object> msg = (Dictionary<string, object>)result; But since its generic Im not sure how to access the field value. Any help? These dont work: var result = data["meta"]["object"].Value<string>(); var result = data.SelectToken("meta.object").ToString(); var result = data.Descendants() .OfType<JProperty>() .FirstOrDefault(x => x.Name == "object") ?.Value; And here is the json:

{
   "v":1,
   "matches_filters":{
      "current":[
      ]
   },
   "meta":{
      "action":"updated",
      "id":1,
      "is_bulk_update":false,
      "matches_filters":{
         "current":[
            
         ]
      },
      "object":"organization",
      "permitted_user_ids":[
         125421,
         12312,
         123123
      ],
      "pipedrive_service_name":false,
      "timestamp":1231415,
   },
   "current":{
      "address_route":"Mama",
      "related_closed_deals_count":0
   },
   "event":"updated",
   "retry":0
}

{
   "v":1,
   "matches_filters":{
      "current":[
      ]
   },
   "meta":{
      "action":"updated",
      "id":1,
      "is_bulk_update":false,
      "matches_filters":{
         "current":[
            
         ]
      },
      "object":"organization",
      "permitted_user_ids":[
         125421,
         12312,
         123123
      ],
      "pipedrive_service_name":false,
      "timestamp":1231415,
   },
   "current":{
      "address_route":"Mama",
      "related_closed_deals_count":0
   },
   "event":"updated",
   "retry":0
}

10 Replies

MODiX•17mo ago

Ero#1111

REPL Result: Success

using System.Text.Json;
using System.Text.Json.Serialization;

public record Root(
    [property: JsonPropertyName("meta")] Meta Meta);

public record Meta(
    [property: JsonPropertyName("object")] string Object);

var json = """
    {
        "v": 1,
        "matches_filters": {
            "current": []
        },
        "meta": {
            "action": "updated",
            "id": 1,
            "is_bulk_update": false,
            "matches_filters": {
                "current": []
            },
            "object": "organization",
            "permitted_user_ids": [
                125421,
                12312,
                123123
            ],
            "pipedrive_service_name": false,
            "timestamp": 1231415
        },
        "current": {
            "address_route": "Mama",
            "related_closed_deals_count": 0
        },
        "event": "updated",
        "retry": 0
    }
    """;

var root = JsonSerializer.Deserialize<Root>(json);

root.Meta.Object

using System.Text.Json;
using System.Text.Json.Serialization;

public record Root(
    [property: JsonPropertyName("meta")] Meta Meta);

public record Meta(
    [property: JsonPropertyName("object")] string Object);

var json = """
    {
        "v": 1,
        "matches_filters": {
            "current": []
        },
        "meta": {
            "action": "updated",
            "id": 1,
            "is_bulk_update": false,
            "matches_filters": {
                "current": []
            },
            "object": "organization",
            "permitted_user_ids": [
                125421,
                12312,
                123123
            ],
            "pipedrive_service_name": false,
            "timestamp": 1231415
        },
        "current": {
            "address_route": "Mama",
            "related_closed_deals_count": 0
        },
        "event": "updated",
        "retry": 0
    }
    """;

var root = JsonSerializer.Deserialize<Root>(json);

root.Meta.Object

Result: string

organization

organization

Compile: 624.654ms | Execution: 91.993ms | React with ❌ to remove this embed.

ero•17mo ago

yay

Esa•17mo ago

Hi, there are several ways you can go about this. System.Text.Json can be used if you want to deserialize it into a strongly typed class, but that requires you to create the class for it first. Luckily there are tools to help convert json to .cs objects. This can probably be a bit bloated if you worry about that, but it'll be consise and very readable and generally is the preferred way if the payload won't change. Another approach is to use the more generic JsonElement (also from STJ) I think they're called, where you instead deserialize this into something more generic where you can access it like you would a dictionary.

json["meta"]?["object"]

json["meta"]?["object"]

I prefer @Eros approach here, that solution is how I'd do it too

HappyTeaKid•17mo ago

Yes, it might vary depending on the request thats why it is generic. Im looking trough the other solution that have been posted here

Esa•17mo ago

How may it vary? May the content of the json change, or just the values of the contents? Because if you can keep a strongly typed class I'd prefer that

ero•17mo ago

the content of object changes types depending on the request, then it's difficult if you know the type beforehand, because you know what it returns based on the request, a generic parameter might work

HappyTeaKid•17mo ago

got another solution string meta = (new JavaScriptSerializer()).Serialize(msg["meta"]); string obj = meta.Substring(meta.IndexOf("object")+9);

Angius•17mo ago

1. Generate classes from this JSON 2. Deserialize to those classes 3. Hurray, now you're using the benefits of C#'s type system in full and you can get rid of magic strings!

Anton•17mo ago

+9?

Accord•17mo ago

Was this issue resolved? If so, run /close - otherwise I will mark this as stale and this post will be archived until there is new activity.

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❔ Get value out of deserialized json object.