private void btnAdd_Click(object sender, RoutedEventArgs e)
{
try
{
if (txtPerformanceName.Text == "")
{
throw new ApplicationException("Performance must have a name.");
}
if (dtpDate.SelectedDate <= DateTime.Now)
{
throw new ApplicationException("The performance date must be after today.");
}
if (performanceManager.AddPerformance(new Performance(999999, txtPerformanceName.Text, (DateTime)dtpDate.SelectedDate, txtDescription.Text)) == 1)
{
DialogResult = true;
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}