How deserialize Json with multiples objects

I’ve received a JSON from a Web API to build an MVC application. (https://api.coingecko.com/api/v3/exchange_rates)

The structure look’s like this:

{
  "rates": {
    "btc": {
      "name":"Bitcoin",
      "unit":"BTC",
      "value":1.0,
      "type":"crypto"
    },
    "eth":{
      "name":"Ether",
      "unit":"ETH",
      "value":12.954,
      "type":"crypto"
    },...

When I use "Paste JSON as Classes" it’s generate a huge list of classes and a Root Object with a lot of properties.

I’m deserializing it like this:

Rootobject myDeserializedClass = JsonConvert.DeserializeObject<Rootobject>(jsonstring)

There’s a better way of doing that?

Edit:

I was using a different class for each of the objects:

Exemple:

public class Btc
    {
        public string name { get; set; }
        public string unit { get; set; }
        public double value { get; set; }
        public string type { get; set; }
    }

    public class Eth
    {
        public string name { get; set; }
        public string unit { get; set; }
        public double value { get; set; }
        public string type { get; set; }
    }

    public class Ltc
    {
        public string name { get; set; }
        public string unit { get; set; }
        public double value { get; set; }
        public string type { get; set; }
    }

I’m beginner C# student and didn’t thought about using Dictionary.
A had a code with 66 different classes and a method as below:

var requisicaoWeb = WebRequest.CreateHttp("https://api.coingecko.com/api/v3/exchange_rates");
requisicaoWeb.Method = "Get";
requisicaoWeb.UserAgent = "RequisicaoWebDemo";

using (var resposta = requisicaoWeb.GetResponse())
{
    var streamDados = resposta.GetResponseStream();
    StreamReader reader = new StreamReader(streamDados);
    object objResponse = reader.ReadToEnd();
    var jsonstring = objResponse.ToString().Replace("{\"rates\":", "");
    jsonstring = jsonstring.Remove(jsonstring.Length - 1);
    streamDados.Close();
    resposta.Close();
    Rootobject myDeserializedClass = JsonConvert.DeserializeObject<Rootobject>(jsonstring);
    
    foreach (var p in myDeserializedClass.GetType().GetProperties().Where(p => !p.GetGetMethod().GetParameters().Any()))
    {      
        var test = (p.GetValue(myDeserializedClass));
        if(test!=null)
        {
         string lol = test.ToString().ToLower();
            jsonstring = jsonstring.Replace($"\"{lol}\":", "");
        }         
    }

    jsonstring = jsonstring.Remove(jsonstring.Length - 1)
                           .Remove(0,1)
                           .Replace($"\"try\":", "")
                           .Insert(0, "[");
    jsonstring = jsonstring.Insert(jsonstring.Length, "]");   
}

>Solution :

The rates json can be modelled as a Dictionary<string, CustomClass>. Using the following classes you should be able to deserialize the json:

public class MyData
{
    public Dictionary<string, CryptoData> Rates { get;set;}
}

public class CryptoData
{
    public string Name { get;set;}
    public string Unit { get;set;}
    public string Value { get;set;}
    public string Type { get;set;}
}

And deserialize (using Newtonsoft.Json):

var model = JsonConvert.DeserializeObject<MyData>(json);

Demo