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); } }