private void ButtonAddNew_Click(object sender, EventArgs e) //event to add a new student
{
frmAddNewStudent newStudentForm = new frmAddNewStudent(); //declare instance of a new form frmAddNewStudent
newStudentForm.Show(); //show the form
this.Hide();
newStudentForm.VisibleChanged += formVisibleChanged; //change visibility
}
private void formVisibleChanged(object sender, EventArgs e) // method for when frmAddNewStudent closes
{
frmAddNewStudent newStudentForm = (frmAddNewStudent)sender; //instance of frmAddNewStudent
if (!newStudentForm.Visible & newStudentForm.DoAddStudent()) //if form is not visible and DoAddStudent is true
{
students.Add(newStudentForm.returnStudent()); //add new student from form to students list
FillStudentListBox(); //call method to add new student to the list box
newStudentForm.Dispose(); //delete the old form
this.Show(); //show
}
}