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Prevent user from navigate to PreviousPeriod

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Scheduler
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Stargazer
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Stargazer asked on 16 Sep 2013, 11:29 AM
Hello!

I have a requirement on my application that states no user can navigate to a date that falls within a specified interval (in this case a year, starting in September, for instance).

I manage to do this using pre-render event and setting the popup calendar min and max date properties. Using the popup works beautifully.

Now I need same functionality on the navigation buttons. I tried using NavigationCommand event, but when the command is NavigateToNextPeriodo or NavigateToPrevious period I can not do this, since I do not have a suitable date to compare with my interval, so I can decide to cancel or not the command. Like so:

if (e.Command == SchedulerNavigationCommand.NavigateToNextPeriod ||
    e.Command == SchedulerNavigationCommand.NavigateToPreviousPeriod ||
    e.Command == SchedulerNavigationCommand.NavigateToSelectedDate ||
    e.Command == SchedulerNavigationCommand.SwitchToSelectedDay)
{
    using (ServicoAnosLectivos servico = new ServicoAnosLectivos())
    {
        DateTime[] datas = servico.GetDatasAnoLectivo(ServicoTabelasBaseSistema.GetAnoLectivoActual(true));
        if (e.SelectedDate < datas[0] ||
            e.SelectedDate > datas[1])
        {
            e.Cancel = true;
        }
    }
}


Has anyone been on this kind of a picle? Is there any ideas on how to achieve this?

Thanks!

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Plamen
Telerik team
answered on 19 Sep 2013, 12:29 PM
Hi,

 
Here is the code that should work for you for Day and WeekView for example:

protected void RadScheduler1_NavigationCommand(object sender, SchedulerNavigationCommandEventArgs e)
   {
       DateTime[] datas = { new DateTime(2013, 9, 8), new DateTime(2013, 9, 1) };
       RadScheduler scheduler=(RadScheduler)sender;
       if (e.Command == SchedulerNavigationCommand.NavigateToSelectedDate ||
                e.Command == SchedulerNavigationCommand.SwitchToSelectedDay)
       {
          
 
               if (e.SelectedDate < datas[0] &&
                   e.SelectedDate > datas[1])
               {
                   e.Cancel = true;
               }
            
       }
       else if (e.Command == SchedulerNavigationCommand.NavigateToNextPeriod)
       {
           if (scheduler.SelectedView==SchedulerViewType.DayView)
           {
               if (scheduler.SelectedDate.AddDays(1)< datas[0] &&
                   scheduler.SelectedDate.AddDays(1) > datas[1])
               {
                     e.Cancel = true;
               }
           }
           if (scheduler.SelectedView == SchedulerViewType.WeekView)
           {
               if (scheduler.SelectedDate.AddDays(7) < datas[0] &&
                   scheduler.SelectedDate.AddDays(7) > datas[1])
               {
                   e.Cancel = true;
               }
           }
       }
       else if (e.Command == SchedulerNavigationCommand.NavigateToPreviousPeriod)
       {
           if (scheduler.SelectedView == SchedulerViewType.DayView)
           {
               if (scheduler.SelectedDate.AddDays(-1) < datas[0] &&
                   scheduler.SelectedDate.AddDays(-1) > datas[1])
               {
                   e.Cancel = true;
               }
           }
           if (scheduler.SelectedView == SchedulerViewType.WeekView)
           {
               if (scheduler.SelectedDate.AddDays(-7) < datas[0] &&
                   scheduler.SelectedDate.AddDays(-7) > datas[1])
               {
                   e.Cancel = true;
               }
           }
       }
   }

Hope this will be helpful.

Regards,
Plamen
Telerik
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Stargazer
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answered on 19 Sep 2013, 04:08 PM
Hi Plament,

That did the trick. Just had to tweak the conditions and it was all set. 

Thanks!
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