使用.netcore 1创建后台任务

using Microsoft.Extensions.Hosting;
using System.Threading;
using System.Threading.Tasks;

public class BackgroundService : IHostedService, IDisposable
{
    private Timer _timer;

    public Task StartAsync(CancellationToken cancellationToken)
    {
        _timer = new Timer(DoWork, null, TimeSpan.Zero, TimeSpan.FromSeconds(5));
        return Task.CompletedTask;
    }

    private void DoWork(object state)
    {
        // 这里执行后台任务逻辑
        Console.WriteLine("后台任务正在运行...");
    }

    public Task StopAsync(CancellationToken cancellationToken)
    {
        _timer?.Change(Timeout.Infinite, 0);
        return Task.CompletedTask;
    }

    public void Dispose()
    {
        _timer?.Dispose();
    }
}

public void ConfigureServices(IServiceCollection services)
{
    services.AddHostedService<BackgroundService>();
    // 其他服务配置...
}