private void ucImportATTT_Load(object sender, EventArgs e)
{
ConnectionExcell cne = new ConnectionExcell();
dataPC_ATTT.DataSource = cne.ImportExcel(@"E:\C#\Hoc C#\Winform\QLPCgiangday\K12_Bao day_Khoa K12_rr.xls", "BM_80");
}