// load
private void load()
{
// truyen lên datagridview
dtInvoice = new DataTable();
dtInvoice.Clear();
dtInvoice = invoiceBusiness.getList().Tables[0];
dgvInvoice.DataSource = dtInvoice;
//
dgvInvoice_CellClick(null, null);
txtTien.Enabled = false;
txtInID2.Enabled = false;
txtInvoiceID.Enabled = false;
txtCustom.Enabled = false;
txtEmploy.Enabled = false;
txtamount.ResetText();
txtPro.ResetText();
}
