public FormStu()
{
InitializeComponent();
string sql = "SELECT cno FROM classes";
DBUtil.fillComboBox(cbCno, sql);
reLoad();
}
public FormQuery()
{
InitializeComponent();
string sql = "SELECT dname FROM departments";
DBUtil.fillComboBox(comboBox1, sql);
sql = "SELECT cspec FROM classes";
DBUtil.fillComboBox(comboBox2, sql);
}