private void btnThemNCC_Click(object sender, EventArgs e)
{
txtTenNCC.Clear();
txtDiaChi.Clear();
txtSDT.Clear();
txtTenNCC.Enabled = true;
cboMaLoai.Enabled = true;
txtTenNCC.Enabled = true;
txtDiaChi.Enabled = true;
txtSDT.Enabled = true;
btnLuuNCC.Enabled = true;
btnXoaNCC.Enabled = false;
btnSuaNCC.Enabled = false;
if (dgvNhaCC.RowCount <= 0)
{
txtMaNCC.Text = "NCC01";
}
else
{
txtMaNCC.Text = ncc_bll.getMaNhaCungCap();
}
add = true;
update = false;
}