private void dataGridView4_DoubleClick(object sender, EventArgs e) { string sIdUser = "", sIdMag = ""; if (textBox4.Text != "") { sIdUser = textBox4.Text; sIdMag = dataGridView4.CurrentRow.Cells[0].Value.ToString(); fbLogowanie = new fblog(); fbLogowanie.fUsunUPRMag(sIdUser, sIdMag); } fMagazynyListUPR(textBox4.Text); }