private void TbsearchInvoice_SearchTextChanged(object sender, EventArgs e)
{
if (tbsearchInvoice.SearchText.Length > 0 && cboCustomer.SelectedIndex != -1)
{
gridAvailableInvoices.ItemsSource = ClsPEZAData.GetSalesInvoiceSummaryListFromCantierForPEZA8112byCustomerByInvoice(Convert.ToInt16(cboCustomer.SelectedValue.ToString().Trim())
, tbsearchInvoice.SearchText.ToString().Trim()).DefaultView;
}
}