How to set Key name dynamically while serializing class object to JSON string in c# [duplicate]

Question

Suppose I am having one class like -

public class Test
{
   public int id { get; set; } 
   public string name { get; set; }
}

Normal JSON conversion will output like {"id":1,"name":"Souvik"}

If I Put JsonProperty attribute like below in properties, output will be - {"studentId":1,"studentname":"Souvik"}

public class Test
{ 
  [JsonProperty("studentId")]
  public int id { get; set; }

  [JsonProperty("studentname")]
  public string name { get; set; }
}

But I don't want to set this hardcoded name of JsonProperty on id, name property of class and want to set these dynamically. How Can I do that?

What do you mean by "dynamically"? Can you show some usage? How dynamically you want to change the property names, what is the use case? — Guru Stron
– Guru Stron, Commented Sep 7, 2020 at 15:14
I want to set the JsonProperty name dynamically, meaning output may be like {"id":1,"name":"Souvik"} / {"FullID":1,"Fullname":"Souvik"} / anything like this. Noticed that Key name in JSON output is different — souvik
– souvik, Commented Sep 7, 2020 at 15:29

Guru Stron · Accepted Answer · 2020-09-07 19:35:09Z

0

Not sure what you want to achieve but you can for example add properties as entries to Dictionary<string, string>, and serialize it:

var test = new Test
{
    id = 1,
    name = "test"
};
var x = new Dictionary<string, object>();
x.Add("studentId", test.id); // dynamically build the key  
x.Add("studentName", test.name); // dynamically build the key 
Console.WriteLine(JsonConvert.SerializeObject(x)); // prints "{"studentId":1,"studentName":"test"}"

answered Sep 7, 2020 at 19:35

Guru Stron

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1 Comment

souvik Over a year ago

This one helped me. thank you

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