How to convert JSON values that START with a NUMBER to C# Class

Question

I use a web service whose output fields starts with a number like the below

[{"1_sell_count":"1","2_sell_count":"2","3_sell_count":"2"}]

Since I can't have a variable in C # that starts with a number and If I change the property name, the JsonConvert.DeserializeObject method cannot do the conversion JSON To my Class.

how can I convert this JSON output to a C# class?

    List<myclass> reservationList = new List<myclass>();
    using (var response = await httpClient.GetAsync(urlApi))
                    {
                        string apiResponse = await response.Content.ReadAsStringAsync();
                        reservationList = JsonConvert.DeserializeObject<List<myclass>>(apiResponse);
                    }

and myclass.cs

 public class myclass
    {
        public string 1_sell_count{ get; set; }  //Not Valid Name
        public string 2_sell_count{ get; set; }   //Not Valid Name
        public string 3_sell_count{ get; set; }    //Not Valid Name
    }

What is the solution to this problem?

Answer 1

You can attach the JsonProperty attribute over property as shown below which instructs the JsonSerializer to always serialize the member with the specified name

public class myclass
{
    [JsonProperty("1_sell_count")]

    public string First_sell_count{ get; set; }  
    [JsonProperty("2_sell_count")]
    public string Second_sell_count{ get; set; }   
    
    [JsonProperty("3_sell_count")]
    public string Third_sell_count{ get; set; }    
}

See the fiddle - https://dotnetfiddle.net/xGhtxv

With above your conversion logic would remain intact i.e.

reservationList = JsonConvert.DeserializeObject<List<myclass>>(apiResponse);

However, you should be using the property name defined in the class to access the property in C# code.