C# example gives error message

Alpaca Integration Applications
1

I am trying to run the c# “Market Data Example” when I enter the line:

var bars = await client.GetBarsetAsync(new[] { “AAPL” }, TimeFrame.Day, 5);

I get the error message:

‘AlpacaTradingClient’ does not contain a definition for ‘GetBarsetAsync’…

Any suggestions on how to fix this error.

Thanks

2

You have to use the AlpacaDataClient class and GetBarSetAsync method. I’ll prepare PR for fixing documentation soon. Sorry for this inconvenience and best regards.

3

Thanks for replying,

I have used:

var client = Alpaca.Markets.Environments.Paper
.GetAlpacaTradingClient(API_KEY, new SecretKey(API_SECRET));

// Get daily price data for AAPL over the last 5 trading days.
var bars = await client.GetBarsetAsync(new[] { “AAPL” }, TimeFrame.Day, 5);

GetBarsetAsync gives me the error

Let me know if I should change anything in the published example.

4

There is updated example for GetBarSetAsync method (still under review by Alpaca maintainers):

using Alpaca.Markets;
using System;
using System.Linq;
using System.Threading.Tasks;

namespace CodeExamples
{
    internal static class Example
    {
        private static string API_KEY = "your_api_key";

        private static string API_SECRET = "your_secret_key";

        public static async Task Main(string[] args)
        {
            // First, open the API connection
            var client = Alpaca.Markets.Environments.Paper
                .GetAlpacaDataClient(API_KEY, new SecretKey(API_SECRET));

            // Get daily price data for AAPL over the last 5 trading days.
            var bars = await client.GetBarSetAsync(new[] { "AAPL" }, TimeFrame.Day, 5);

            // See how much AAPL moved in that timeframe.
            var startPrice = bars["AAPL"].First().Open;
            var endPrice = bars["AAPL"].Last().Close;

            var percentChange = (endPrice - startPrice) / startPrice * 100;
            Console.WriteLine($"AAPL moved {percentChange} over the last 5 days.");

            Console.Read();
        }
    }
}
1 Like
5

Thanks for the information

1 Like
6

https://alpaca.markets/docs/api-documentation/how-to/market-data/ The docs has been updated as well.

7

Thanks for the reply