private void btnAddCourse_Click(object sender, EventArgs e)
{
Course c = new Course(txtCourseName.Text, numOfSections, sections);
CourseManager.getInstance().addCourse(c);
this.Close();
Form1 form1 = Form1.getInstance();
form1.Form1_Load(sender, e);
}
public void Form1_Load(object sender, EventArgs e)
{
cbxCourses.Items.Clear();
courses = CourseManager.getInstance().courseList;
foreach (Course c in courses)
{
cbxCourses.Items.Add(c.name.ToString());
}
dataGridView1.Rows.Clear();
insertRows();
}