.net core 简单定时程序

using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.Hosting;
using Orleans;
using Star.Helpers;
using Star.IModuleServices.Common.Interfaces.System;
using Star.IModuleServices.Common.Models.System.SettingHotUpdate.Responses;
using System;
using System.Collections.Concurrent;
using System.Collections.Generic;
using System.Threading;
using System.Threading.Tasks;
using Star.Service.Project.Admin.Tool.ConfigTime;
namespace Star.Service.Project.Admin.Tool.ConfigTime
{
    /// <summary>
    /// 简单的定时任务执行
    /// </summary>
    public class TimedExecutService : BackgroundService
    {
        protected override async Task ExecuteAsync(CancellationToken stoppingToken)
        {
            try
            {
                Console.WriteLine(DateTime.Now.ToString() + "BackgroundService：启动");

                while (!stoppingToken.IsCancellationRequested)
                {
                    await Task.Delay(5000, stoppingToken); //启动后5秒执行一次 (用于测试)
                    //数据源
                    ApiResult<List<SysSettingHotUpdateResponseDto>> list = new ApiResult<List<SysSettingHotUpdateResponseDto>>();
                    try
                    {
                        var cluster = Ioc.GetService<IClusterClient>();
                        list = await cluster.GetGrain<ISysSettingHotUpdate>(0).GetList("Star.Service.Project.Admin");
                    }
                    catch (Exception ex)
                    {
                        throw new Exception("未获取到相关配置:" + ex.Message);
                    }

                    if (list.Data.Count <= 0)
                    {
                        throw new Exception("未获取到相关配置");
                    }
                    //自定义数据处理
                    ConfigData.Data = new ConcurrentDictionary<string, string>();
                    list.Data.ForEach(c =>
                    {
                        ConfigData.Data[c.K] = c.V;
                    });
                    Console.WriteLine(DateTime.Now.ToString() + " 执行逻辑");
                }
                Console.WriteLine(DateTime.Now.ToString() + "BackgroundService：停止");
            }
            catch (Exception ex)
            {
                if (!stoppingToken.IsCancellationRequested)
                {
                    Console.WriteLine(DateTime.Now.ToString() + "BackgroundService：异常" + ex.Message + ex.StackTrace);
                }
                else
                {
                    Console.WriteLine(DateTime.Now.ToString() + "BackgroundService：停止");
                }
            }
        }
      
    }
}

注入定时任务：
services.AddSingleton<Microsoft.Extensions.Hosting.IHostedService, TimedExecutService>();