private void btnShowReceipt_Click(object sender, EventArgs e) { if (dataGridViewRECEIPT.RowCount <= 0) { MessageBox.Show("عفوا لا توجد فواتير"); } else { BL.CLS_RECEIPT_ITEMS receipt_items = new BL.CLS_RECEIPT_ITEMS(); PL.SHOW_ITEMS items = new PL.SHOW_ITEMS(); DataTable Dt = new DataTable(); Dt = receipt_items.SEARCH_RECEIPT_ITEMS(Convert.ToString(this.dataGridViewRECEIPT.CurrentRow.Cells[5].Value)); if (Dt.Rows.Count > 0) { items.dataGridViewITEMS.DataSource = Dt; } items.ShowDialog(); } }