Ensure thatTelegram.Bots.Extensions.Pollingpackage is installed. See .
Successful polling requires an implementation of IUpdateHandler so we will first address that with an example:
using System.Threading;
using System.Threading.Tasks;
using Telegram.Bots.Extensions.Polling;
using Telegram.Bots.Requests;
using Telegram.Bots.Types;
namespace Telegram.Bots.Example
{
public class UpdateHandler : IUpdateHandler
{
public Task HandleAsync(IBotClient bot, Update update, CancellationToken token)
{
return update switch
{
MessageUpdate u when u.Data is TextMessage message => Echo(message),
_ => Task.CompletedTask
};
Task Echo(TextMessage message) =>
bot.HandleAsync(new SendText(message.Chat.Id, message.Text), token);
}
}
}
Now that an IUpdateHandler exists, we can create a .NET Core console application with the bot client and polling configured as such:
using System.Threading.Tasks;
using Microsoft.Extensions.Hosting;
using Telegram.Bots.Extensions.Polling;
namespace Telegram.Bots.Example
{
public static class Program
{
public static Task Main() => new HostBuilder()
.ConfigureServices((context, services) =>
{
services.AddBotClient("<bot-token>");
services.AddPolling<UpdateHandler>();
})
.RunConsoleAsync();
}
}