private void cmbMaSoKU_SelectedValueChanged(object sender, EventArgs e)
{
String s_MaSoKU = Convert.ToString(cmbMaSoKU.SelectedValue).Trim();
TK1ctrl.HienThiComboboxTheoMaKheuocTV(numSoTienGoc, cmbTaiKhoanNo, cmbTaiKhoanCo, s_MaSoKU);
}