Program.cs

using DSharpPlus;
using DSharpPlus.Entities;
using DSharpPlus.EventArgs;
using DSharpPlus.SlashCommands;

namespace ConsoleApp1 {
    class Program {
        static void Main(string[] args) {
            new Program().MainAsync().GetAwaiter().GetResult();
        }

        public static DiscordClient Discord { get; private set; }

        public Task Status(DiscordClient c, HeartbeatEventArgs e) {
            //var x = new DiscordActivity(name: "", type: ActivityType.Custom);
            //Discord.UpdateStatusAsync(x);
            return Task.CompletedTask;
        }
        public async Task MainAsync() {

            Discord = new DiscordClient(new DiscordConfiguration() {
                Token = File.ReadAllText("C:\\Auth\\BotToken.auth"), // Enter your token at C:\Auth\BotToken.auth
                TokenType = TokenType.Bot,
                MinimumLogLevel = Microsoft.Extensions.Logging.LogLevel.Debug,
                LogTimestampFormat = "MMM dd yyyy - hh:mm:ss tt",
                Intents = DiscordIntents.All
            });

            Discord.Heartbeated += Status;

            var commandsConfig = new SlashCommandsConfiguration { }; // If you need to configure, configure here
            var slash = Discord.UseSlashCommands(commandsConfig);

            slash.RegisterCommands<ConsoleApp1.Commands.SlashCommands>(); // Registers all commands in ConsoleApp1 > Commands > SlashCommands

            await Discord.ConnectAsync();
            await Task.Delay(-1);
        }
    }
}