C#+TaskScheduler(定时任务)实现定时自动下载

转载地址：https://blog.csdn.net/kongwei521/article/details/53185788

实现原理，客户是广电,在广电服务器创建一个FTP目录，然后每天自动从卫星上自动更新节目列表，然后功能就是要每天定点一个时间自动跟FTP目录中前一天下载下来的节目信息进行时间和大小对比，如果有差异则自动下载覆盖，让插入到数据库中，因此就想到了两个办法：

1：用服务来实现 http://blog.csdn.net/kongwei521/article/details/51626589 http://blog.csdn.net/kongwei521/article/details/51793036

2：windows定时任务

经过一段时间观察用服务来实现的下载时间会越来越靠后，感觉不靠谱就想用定时任务来替换。

最终使用 Microsoft.Win32.TaskScheduler 来实现了可以使用，另外两个 FluentScheduler Quartz.Net 来实现，

效果图：

C#+TaskScheduler(定时任务)实现定时自动下载

代码：

新建一个控制台应用程序：

然后写代码：

using Microsoft.Win32.TaskScheduler;

第一种方法：

// Get the service on the local machine
TaskService ts = new TaskService();
// Create a new task definition and assign properties
TaskDefinition td = ts.NewTask();
td.RegistrationInfo.Description = "wei kong";
// Add a trigger that will fire the task at this time every other day
DailyTrigger dt = (DailyTrigger)td.Triggers.Add(new DailyTrigger { DaysInterval = 1 });
//设置任务起始时间
dt.StartBoundary = Convert.ToDateTime(DateTime.Now.ToString("yyyy-MM-dd 09:40:00"));
//设置重复任务间隔时间
dt.Repetition.Interval = TimeSpan.FromDays(1);
// Create an action that will launch Notepad whenever the trigger fires
td.Actions.Add(new ExecAction(@"C:\AutoDownTvInfo.exe", "", null));／／这里可参考http://blog.csdn.net/kongwei521/article/details/51793036下载
// Register the task in the root folder
ts.RootFolder.RegisterTaskDefinition(@"Test", td);
Thread.Sleep(2000);
Console.WriteLine("计划任务结束" + DateTime.Now);
Thread.Sleep(2000);

第二种方法：

使用方法：

var compath = AppDomain.CurrentDomain.BaseDirectory +"AutoDownTvInfo.exe";／／这里可参考http://blog.csdn.net/kongwei521/article/details/51793036下载

CreateTaskScheduler("kong wei", "AutoDownTvInfo", compath, "500");

/// delete task
/// </summary>
/// <param name="taskName"></param>
private static void DeleteTask(string taskName)
{
TaskSchedulerClass ts = new TaskSchedulerClass();
ts.Connect(null, null, null, null);
ITaskFolder folder = ts.GetFolder("\\");
folder.DeleteTask(taskName, 0);
}
/// <summary>
/// get all tasks
/// </summary>
public static IRegisteredTaskCollection GetAllTasks()
{
TaskSchedulerClass ts = new TaskSchedulerClass();
ts.Connect(null, null, null, null);
ITaskFolder folder = ts.GetFolder("\\");
IRegisteredTaskCollection tasks_exists = folder.GetTasks(1);
return tasks_exists;
}
/// <summary>
/// check task isexists
/// </summary>
/// <param name="taskName"></param>
/// <returns></returns>
public static bool IsExists(string taskName)
{
var isExists = false;
IRegisteredTaskCollection tasks_exists = GetAllTasks();
for (int i = 1; i <= tasks_exists.Count; i++)
{
IRegisteredTask t = tasks_exists[i];
if (t.Name.Equals(taskName))
{
isExists = true;
break;
}
}
return isExists;
}
/// <summary>
/// create task
/// </summary>
/// <param name="creator"></param>
/// <param name="taskName"></param>
/// <param name="path"></param>
/// <param name="interval"></param>
/// <returns>state</returns>
public static _TASK_STATE CreateTaskScheduler(string creator, string taskName, string path, string interval)
{
try
{
if (IsExists(taskName))
{
DeleteTask(taskName);
}
//new scheduler
TaskSchedulerClass scheduler = new TaskSchedulerClass();
//pc-name/ip,username,domain,password
scheduler.Connect(null, null, null, null);
//get scheduler folder
ITaskFolder folder = scheduler.GetFolder("\\");
//set base attr
ITaskDefinition task = scheduler.NewTask(0);
task.RegistrationInfo.Author = "kong wei";//creator
task.RegistrationInfo.Description = "每天自动定时下载节目信息";//description
//set trigger (IDailyTrigger ITimeTrigger)　设置小时／分／秒来实现
// ITimeTrigger tt = (ITimeTrigger)task.Triggers.Create(_TASK_TRIGGER_TYPE2.TASK_TRIGGER_TIME);
// tt.Repetition.Interval = interval;// format PT1H1M==1小时1分钟设置的值最终都会转成分钟加入到触发器
／／设置每天特定的时间来实现 IDailyTrigger tt = (IDailyTrigger)task.Triggers.Create(_TASK_TRIGGER_TYPE2.TASK_TRIGGER_DAILY);
tt.StartBoundary = "2016-11-15T10:15:00";
//start time //set action
IExecAction action = (IExecAction)task.Actions.Create(_TASK_ACTION_TYPE.TASK_ACTION_EXEC);
action.Path = path; task.Settings.ExecutionTimeLimit = "PT0S"; //运行任务时间超时停止任务吗? PTOS 不开启超时
task.Settings.DisallowStartIfOnBatteries = false;//只有在交流电源下才执行
task.Settings.RunOnlyIfIdle = false;//仅当计算机空闲下才执行
IRegisteredTask regTask = folder.RegisterTaskDefinition(taskName, task, (int)_TASK_CREATION.TASK_CREATE, null, //user null,
// password _TASK_LOGON_TYPE.TASK_LOGON_INTERACTIVE_TOKEN, ""); IRunningTask runTask = regTask.Run(null); return runTask.State;
}
catch (Exception ex) { throw ex; } }

参考资料：

http://twinklers3.rssing.com/chan-3472162/all_p18.html

http://tzedeck.seesaa.net/article/388838290.html

http://ymlib.com/YMWorld/CS/P1/W3/P134/YMWCS134.html