private void DgLopHoc_CellClick(object sender, DataGridViewCellEventArgs e)
{
DiemDanh dd = new DiemDanh(usLopDay.dgLopHoc.Rows[e.RowIndex].Cells["Ma_LopHoc"].Value.ToString());
dd.btQuayLai.Click += BtQuayLai_Click1;
Main.Controls.Clear();
Main.Controls.Add(dd);
}
private void BtChiTiet_Click(object sender, EventArgs e)
{
DiemDanh dd = new DiemDanh(Ma_LopHoc_1);
Main.Controls.Clear();
Main.Controls.Add(dd);
dd.btQuayLai.Click += BtQuayLai_Click2;
}
