private void btnSwapActivities_Click(object sender, EventArgs e)
{
// get the selected index
int activity1 = cmbActivity1.SelectedIndex + 1;
int activity2 = cmbActivity2.SelectedIndex + 1;
// validate the given index
if (activity1 == activity2)
{
MessageBox.Show("These dates are the same!"); // when the samen are selected show a messagebox
}
else
{
// get the start and end date for activity 1
string startactivity1 = activity_Service.GetDateTimeActivityStart(activity1);
string endactivity1 = activity_Service.GetDateTimeActivityEnd(activity1);
// get the start and end date for activity 2
string startactivity2 = activity_Service.GetDateTimeActivityStart(activity2);
string endactivity2 = activity_Service.GetDateTimeActivityEnd(activity2);
// swap the dates for the activities
activity_Service.SwapActivities(activity1, startactivity2, endactivity2);
activity_Service.SwapActivities(activity2, startactivity1, endactivity1);
}
}
