Trouble in deserializing JSON data from CoinGecko API

Question

I'm having an issue while getting some JSON to deserialize. It's coming in via HttpClient from CoinGecko API.

This is the URL: GetSimplePrice

It returns:

{
  "bitcoin": {
    "usd": 28352.7,
    "eur": 26185.8
  },
  "ethereum": {
    "usd": 1821.4,
    "eur": 1682.2
  }
}

Special-Pasting the above as JSON into C# creates these classes (works):

public class Rootobject
{
    public Bitcoin bitcoin { get; set; }
    public Ethereum ethereum { get; set; }
}

public class Bitcoin
{
    public float usd { get; set; }
    public float eur { get; set; }
}

public class Ethereum
{
    public float usd { get; set; }
    public float eur { get; set; }
}

However, the name of the coin and the currency are dynamic fields so I can't use that exactly as is.

I've tried the below and while the deserialization works, my class returns empty:

public class SimplePrice
{
    public Coin Coin { get; set; }
}

public class Coin
{       
    public float Price { get; set; }
}

I've been banging my head against a wall for a while on this one.

Any help would be greatly appreciated! Thanks!

Answer 1

From the JSON, you should deserialize as Dictionary<string, Dictionary<string, float>> type.

Dictionary<string, Dictionary<string, float>> simplePrice = JsonConvert.DeserializeObject<Dictionary<string, Dictionary<string, float>>>(json);

foreach (KeyValuePair<string, Dictionary<string, float>> coin in simplePrice)
{
    Console.WriteLine($"Coin: {coin.Key}");

    foreach (KeyValuePair<string, float> price in coin.Value)
    {
        Console.WriteLine($"{price.Key}: {price.Value}");
    }
}