In DotNetNuke, you can easily create a scheduled task to do whatever you want (eg. clean up files, check currency, etc) easily without needing to write a windows service or using the Windows Task Scheduler. This is quite handy if you want to keep everything self contained or you run within a hosting environment that don't allow you access to Remote Desktop.
To begin, simply create a class that inherits from DotNetNuke.Services.Scheduling.SchedulerClient. Add a constructor that takes a ScheduleHistoryItem argument and calls the base() constructor. Override the DoWork() method and perform your work there. Remember to catch exception and set ScheduleHistoryItem.Succeeded = true on success.
public class CurrencyAgent : SchedulerClient
public CurrencyAgent(ScheduleHistoryItem scheduleHistoryItem):base()
this.ScheduleHistoryItem = scheduleHistoryItem;
public override void DoWork()
// Do some work, like download today's currency...
// Notify that scheduled succeede
ScheduleHistoryItem.Succeeded = true;
catch (Exception ex)
// report a failure
ScheduleHistoryItem.Succeeded = false;
// log the exception into
// the scheduler framework
ScheduleHistoryItem.AddLogNote("EXCEPTION: " + ex.ToString());
// call the Errored method
// log the exception into the DNN core
Compile the code into a normal DLL and deploy it with your module. Go to Host > Schedule and add your scheduler. You'll be asked to provide the full class name and assembly. DotNetNuke can run the scheduled task under ASP.NET request thread or on a separate timer thread of its own. If configured to run on a timer thread, beware that your code won't have access to ASP.NET variables and environment.