private void addCourseBtn_Click(object sender, EventArgs e)
        {
            COURSE course = new COURSE();
            int    cid    = Convert.ToInt32(textBoxCId.Text);
            string cLabel = textBoxCName.Text;
            int    cPed   = Convert.ToInt32(textBoxCPed.Text);
            string cDesc  = textboxCDesc.Text;

            if ((cPed < 10))
            {
                MessageBox.Show("The Course Time must be greater than 10", "Error",
                                MessageBoxButtons.OK, MessageBoxIcon.Error);
            }

            else if (verif())
            {
                if (course.insertCourse(cid, cLabel, cPed, cDesc))
                {
                    MessageBox.Show("New Course Added", "Add Course", MessageBoxButtons.OK, MessageBoxIcon.Information);
                }
                else
                {
                    MessageBox.Show("Error", "Add Course", MessageBoxButtons.OK, MessageBoxIcon.Error);
                }
            }
            else
            {
                MessageBox.Show("Empty Fields", "Add Student", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
            }
        }