private void btnThem_Click(object sender, EventArgs e)
{
string them = "insert into DMDiem values ('" + comboBoxMaSV.Text + "','" + comboBoxMaMH.Text + "','" + txtLanThi.Text + "','" + txtDiemSo.Text + "','" + txtDiemChu.Text + "') ";
SqlCommand comThem = new SqlCommand(them, con);
comThem.ExecuteNonQuery();
getdata();
MessageBox.Show("Thêm mới thành công ");
this.Close();
frmDMDiem tg = new frmDMDiem();
tg.ShowDialog();
}
private void điểmToolStripMenuItem_Click(object sender, EventArgs e)
{
frmDMDiem diem = new frmDMDiem();
diem.Show();
}