private void ShowHS(DataGridView dgv)
{
QL_GV_HS_THPTEntities sv = new QL_GV_HS_THPTEntities();
dgv.DataSource = sv.GetAllHS();
}
private void ShowGV(DataGridView dgv)
{
QL_GV_HS_THPTEntities gv = new QL_GV_HS_THPTEntities();
dgv.DataSource = gv.GetAllGV();
}