How to schedule a toast notification for a specific date and time in windows 8 app?

Question

I want to schedule toast notification for a specific date and time like 18/3/2015 4:00 PM for windows app in c# for a calender app. I have made 3 combo-boxes (NewEventYear) & so on. What i am trying is..

int x = int.Parse(NewEventYear.SelectedItem.ToString());

/* y & z for month and date respectively */

DateTime EventDate = new DateTime(x,y,z);

ScheduledToastNotification scheduledToast = new ScheduledToastNotification(toastXml, EventDate);

i am getting an error

"FormatException was unhandled by user code : Input string was not in correct format"

pointing at

int x = int.Parse(NewEventYear.SelectedItem.ToString());

Answer 1

Thank you for the help. Solved my problem by writing this code.

int x = int.Parse(NewEventYear.SelectedItem.ToString());          
int y = int.Parse(NewEventMonth.SelectedItem.ToString());
int z = int.Parse(NewEventDate.SelectedItem.ToString());
int a = int.Parse(NewEventHour.SelectedItem.ToString());
int b = int.Parse(NewEventMinutes.SelectedItem.ToString()); 

DateTime EventDate = new DateTime(x,y,z,a,b,0)
TimeSpan NotTime = EventDate.Subtract(DateTime.Now);
DateTime dueTime = DateTime.Now.Add(NotTime);

ScheduledToastNotification scheduledToast = new ScheduledToastNotification(toastXml, dueTime);
ToastNotificationManager.CreateToastNotifier().AddToSchedule(scheduledToast);