c# 4.8 实现Windows 定时任务计划（Task Scheduler）

分享一个我自己写的 Windows 定时任务计划（Task Scheduler） 动态创建代码，没做太多封装，留个实现笔记

首先封装一个简单配置项的类

 1 public class TaskSchedulerConfig
 2 {
 3     /// <summary>
 4     /// 引用程序路径
 5     /// </summary>
 6     public string ApplicationPath { get; set; }
 7     /// <summary>
 8     /// 引用程序参数
 9     /// </summary>
10     //public string ApplicationParameter { get; set; }
11     /// <summary>
12     /// 任务名称
13     /// </summary>
14     public string TaskName { get; set; }
15     /// <summary>
16     /// 任务说明
17     /// </summary>
18     public string TaskDescription { get; set; }
19     /// <summary>
20     /// 任务执行周期 0 每日执行 1 每周执行 2 每月执行
21     /// </summary>
22     public int TaskExecutionCycle { get; set; }
23     /// <summary>
24     /// 开始执行时间范围 yyyy/MM/dd HH:mm:ss
25     /// </summary>
26     public DateTime StartBoundary { get; set; }
27     /// <summary>
28     /// 每月的第几号执行
29     /// </summary>
30     public int DaysOfMonth { get; set; }
31     /// <summary>
32     /// 每周的周几执行
33     /// </summary>
34     public int DaysOfWeek { get; set; }
35 
36 
37 }

 1 /// <summary>
 2         /// 根据数字1-7来设置周一 - 周日
 3         /// </summary>
 4         /// <param name="num"></param>
 5         /// <returns></returns>
 6         static DaysOfTheWeek GetDaysOfTheWeek(int num)
 7         {
 8             switch (num)
 9             {
10                 case 1:
11                     return DaysOfTheWeek.Monday;
12                 case 2:
13                     return DaysOfTheWeek.Tuesday;
14                 case 3:
15                     return DaysOfTheWeek.Wednesday;
16                 case 4:
17                     return DaysOfTheWeek.Thursday;
18                 case 5:
19                     return DaysOfTheWeek.Friday;
20                 case 6:
21                     return DaysOfTheWeek.Saturday;
22                 case 7:
23                     return DaysOfTheWeek.Sunday;
24                 default:
25                     throw new ArgumentException("无效的数字。请提供1到7之间的数字。");
26             }
27         }
28         /// <summary>
29         /// 限定每月只能在1-28号之间执行任务
30         /// </summary>
31         /// <param name="num"></param>
32         /// <returns></returns>
33         static int GetDaysOfMonth(int num)
34         {
35             if (num < 1 || num > 28)
36             {
37                 throw new ArgumentException("无效的数字。请提供1到28之间的数字。");
38             }
39             return num;
40         }

 1 static void Main(string[] args)
 2         {           
 3 
 4             TaskSchedulerConfig taskSchedulerConfig;
 5             try
 6             {
 7                 var taskSchedulerConfigJson = args[0];
 8                 taskSchedulerConfig = JsonConvert.DeserializeObject<TaskSchedulerConfig>(taskSchedulerConfigJson);
 9             }
10             catch
11             {
12                 string demo = @"{
13                           ""ApplicationPath"": ""C:\\YourApplication\\YourExecutable.exe"",
14                           ""TaskName"": ""DailyTask"",
15                           ""TaskDescription"": ""This is a daily task"",
16                           ""TaskExecutionCycle"": 0,
17                           ""StartBoundary"": ""2024/02/28 08:00:00"",
18                           ""DaysOfMonth"": 28,
19                           ""DaysOfWeek"": 3
20                         }";
21 
22                 Console.WriteLine($"参数错误,正确示例：{demo}");
23                 return;
24             }
25 
26 
27             try
28             {
29                 using (TaskService taskService = new TaskService())
30                 {
31                     // 创建一个新任务
32                     TaskDefinition taskDefinition = taskService.NewTask();
33                     taskDefinition.Principal.UserId = "SYSTEM"; // 设置为SYSTEM以在系统级别运行
34                     // 设置任务的基本信息
35                     taskDefinition.RegistrationInfo.Description = taskSchedulerConfig.TaskDescription;
36 
37                     switch (taskSchedulerConfig.TaskExecutionCycle)
38                     {
39                         case 0:
40                             DailyTrigger dailyTrigger = new DailyTrigger();
41                             dailyTrigger.StartBoundary = taskSchedulerConfig.StartBoundary;
42                             dailyTrigger.DaysInterval = 1; // 每天执行
43                             taskDefinition.Triggers.Add(dailyTrigger);
44                             break;
45                         case 1:
46                             WeeklyTrigger weeklyTrigger = new WeeklyTrigger();
47                             weeklyTrigger.StartBoundary = taskSchedulerConfig.StartBoundary;
48                             weeklyTrigger.DaysOfWeek = GetDaysOfTheWeek(taskSchedulerConfig.DaysOfWeek);
49                             weeklyTrigger.WeeksInterval = 1; // 每隔1周执行
50                             taskDefinition.Triggers.Add(weeklyTrigger);
51                             break;
52                         case 2:
53                             MonthlyTrigger monthlyTrigger = new MonthlyTrigger();
54                             monthlyTrigger.StartBoundary = taskSchedulerConfig.StartBoundary;
55                             monthlyTrigger.DaysOfMonth = new[] { GetDaysOfMonth(taskSchedulerConfig.DaysOfMonth) };
56                             monthlyTrigger.MonthsOfYear = MonthsOfTheYear.AllMonths; // 每个月执行
57                             taskDefinition.Triggers.Add(monthlyTrigger);
58                             break;
59                         default:
60                             Console.WriteLine("任务执行周期参数错误！正确示例：0 每日执行 1 每周执行 2 每月执行");
61                             break;
62                     }
63 
64 
65 
66                     // 设置要执行的程序路径
67                     taskDefinition.Actions.Add(new ExecAction(taskSchedulerConfig.ApplicationPath, null, null));
68 
69                     // 将任务注册到 Windows 任务计划程序
70                     taskService.RootFolder.RegisterTaskDefinition(taskSchedulerConfig.TaskName, taskDefinition);
71                     Console.WriteLine("任务计划创建成功！");
72                 }
73             }
74             catch (Exception ex)
75             {
76                 Console.WriteLine($"创建{taskSchedulerConfig.TaskName} 任务错误，错误原因是：{ex.Message}");
77             }
78 
79            
80         }