private void UpdateStudentDetail(object sender, ExecutedRoutedEventArgs e)
{
if (listboxStudent.SelectedItem != null)
{
StudentDetailForm studentdetail = new StudentDetailForm(Mode.Update, st);
studentdetail.ShowDialog();
}
else
{
MessageBox.Show("Please select a student");
}
}
private void OpenStudentDetail(object sender, ExecutedRoutedEventArgs e)
{
Student st = new Student();
StudentDetailForm studentdetail = new StudentDetailForm(Mode.Add,st);
studentdetail.ShowDialog();
}