C#•3mo ago

How to deserialize only child object

I have a json structure and I need only studiableItems data. How can I deserialize only it without creating classes for parent items?

{
 "props":{
        "pageProps": {
            "dehydratedReduxStateKey": {
                "studyModesCommon": {
                    "studiableData": {
                        "studiableItems": [
                            {""item1"": ""data1""},
                            {""item2"": ""data2""},
                            {""item3"": ""data3""}
                        ]
                    }
                }
            }
        }
    }
}

{
 "props":{
        "pageProps": {
            "dehydratedReduxStateKey": {
                "studyModesCommon": {
                    "studiableData": {
                        "studiableItems": [
                            {""item1"": ""data1""},
                            {""item2"": ""data2""},
                            {""item3"": ""data3""}
                        ]
                    }
                }
            }
        }
    }
}

7 Replies

ThatDaniel•3mo ago

var json = @"{
             ""props"":{
                    ""pageProps"": {
                        ""dehydratedReduxStateKey"": {
                            ""studyModesCommon"": {
                                ""studiableData"": {
                                    ""studiableItems"": [
                                        {""item1"": ""data1""},
                                        {""item2"": ""data2""},
                                        {""item3"": ""data3""}
                                    ]
                                }
                            }
                        }
                    }
                }
            }";
    
        var jsonNode = JsonNode.Parse(json);
        var studiableItems = jsonNode["props"]["pageProps"]["dehydratedReduxStateKey"]["studyModesCommon"]["studiableData"]["studiableItems"];
        
        Console.WriteLine(studiableItems.ToJsonString());

var json = @"{
             ""props"":{
                    ""pageProps"": {
                        ""dehydratedReduxStateKey"": {
                            ""studyModesCommon"": {
                                ""studiableData"": {
                                    ""studiableItems"": [
                                        {""item1"": ""data1""},
                                        {""item2"": ""data2""},
                                        {""item3"": ""data3""}
                                    ]
                                }
                            }
                        }
                    }
                }
            }";
    
        var jsonNode = JsonNode.Parse(json);
        var studiableItems = jsonNode["props"]["pageProps"]["dehydratedReduxStateKey"]["studyModesCommon"]["studiableData"]["studiableItems"];
        
        Console.WriteLine(studiableItems.ToJsonString());

ThatDaniel•3mo ago

https://dotnetfiddle.net/oTrJhL

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ThatDaniel•3mo ago

Using System.Text.Json.Nodes or you can use another json package but I like this syntax

Pobiega•3mo ago

or use records for the entire structure and deserialize

ThatDaniel•3mo ago

they didnt want to do that

Pobiega•3mo ago

because stringly typed is... still typed. I dont see how jsonNode["props"]["pageProps"]["dehydratedReduxStateKey"]["studyModesCommon"]["studiableData"]["studiableItems"]; is better

Alex•3mo ago

Thank you

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How to deserialize only child object