convert array object to Json as one line in Json (Serialization of array) ASP.NET core3.1

Question

I'M building Api that need to return json array as response like this :

"tagList": ["dragons", "training"],

But I got ((each element in separate line )):

"tagList": [
        "dragons",
        "training"
    ],

I was using System.Text.Json.Serialization; I tried to change it to Json.net by JsonConvert.SerializeObject(obj) but I got the same result . could anyone help me ,please ?

With Json.NET you can, check the accepted answer here https://stackoverflow.com/questions/53223517/creating-json-without-array-indentation — Romka, Jun 10 '22 at 09:34
The two snippets are *identical*. Whitespace isn't significant in JSON. Why do you want the output in a single line? It matters. Are you trying to return streaming JSON aka JSON per line aka newline-delimited JSON perhaps? — Panagiotis Kanavos, Jun 10 '22 at 09:52
Are you asking how to format a JSON array on a single line **while the containing JSON is formatted on multiple lines** for cosmetic reasons? If so, this is not possible with System.Text.Json, see [In System.Text.Json is it possible to specify custom indentation rules?](https://stackoverflow.com/q/63376873/3744182). With Json.NET it is possible, see the previously linked [Creating JSON without array indentation](https://stackoverflow.com/q/53223517/3744182) as well as [Newtonsoft inline formatting for subelement while serializing](https://stackoverflow.com/q/30831895/3744182). — dbc, Jun 10 '22 at 14:11

score 0 · Answer 1 · answered Jun 10 '22 at 09:50

since you are using System.Text.Json.Serialization , try this

 JsonSerializerOptions options = new JsonSerializerOptions();
  options.WriteIndented = false //not using indent, white space, new line, etc.
    
    string jsonString = JsonSerializer.Serialize(obj, options);

convert array object to Json as one line in Json (Serialization of array) ASP.NET core3.1

1 Answers1