Why is there no data in my List?

ibrahim324 · September 11, 2022, 4:59pm

Friends, this is the code that I’m trying to get running. I use F# here but do know some C#.
I basically follow the samples for binance connector dotnet:

#r "nuget: FSharp.Data"

#r "nuget: Binance.Spot"

open FSharp.Data

open Binance.Spot

open Binance.Spot.Models

open Binance.Common

open System;

open System.IO;

[<Literal>]

let Endpoint = "https://api.binance.com"

[<Literal>]

let Key = "Key"

[<Literal>]

let Secret = "SecretKey"

[<Literal>]

let Sample = """[{"KlineOpenTime":1499040000000,"OpenPrice":0.01634790,"HighPrice":0.80000000,"LowPrice":0.01575800,"ClosePrice":0.01577100,"Volume":"148976.11427815","KlineCloseTime":1499644799999,"QuoteAssetVolume":2434.19055334,"NumberOfTrades":308,"TakerBuyBaseAssetVolume":1756.87402397,"TakerBuyQuoteAssetVolume":28.46694368,"Ignore":0}]"""

type KlineCandleStick = JsonProvider<Sample, RootName="KlineCandleStick">

let market = new Market(Endpoint, Key, Secret)

let data =

    market.KlineCandlestickData("BNBUSDT", Interval.ONE_DAY)

    |> Async.AwaitTask

    |> Async.RunSynchronously

    |> KlineCandleStick.Parse

    |> Seq.toList

    |> Seq.map (fun f -> f.Volume)

data

This gives me the following error:
Error: System.Exception: '[0]/Volume' is missing

Basically, I try to serialize my Json-Data, but the individual Properties are missing.
Hope someone can help.

Thanks in advance.

dino · September 12, 2022, 5:04am

what is the value of the Seq.

github.com

binance/binance-connector-dotnet/blob/master/Examples/CSharp/Market/KlineCandlestickData_Example.cs

namespace Binance.Spot.MarketExamples
{
    using System;
    using System.Net;
    using System.Net.Http;
    using System.Threading.Tasks;
    using Binance.Common;
    using Binance.Spot;
    using Binance.Spot.Models;
    using Microsoft.Extensions.Logging;

    public class KlineCandlestickData_Example
    {
        public static async Task Main(string[] args)
        {
            using var loggerFactory = LoggerFactory.Create(builder =>
            {
                builder.AddConsole();
            });
            ILogger logger = loggerFactory.CreateLogger<KlineCandlestickData_Example>();

This file has been truncated. show original

this is the example script that you can get the kline data.

ibrahim324 · September 12, 2022, 5:45am

In the end, it is a list of KlineCandleStick-objects. When i follow the Sample precisely, it returns a json-string, containing all desired values. My goal here is to cast it to some sort of strongly typed list of objects, but on the way there i seem to lose some data.