private void buttonSave_Click(object sender, EventArgs e) { if (listView1.Items.Count > 0) { if (File.Exists(pathReadAnWrite)) { File.Delete(pathReadAnWrite); } string addString = ""; for (int column = 0; column < listView1.Items.Count; column++) { for (int row = 0; row < listView1.Items[column].SubItems.Count; row++) { addString += listView1.Items[column].SubItems[row].Text + "?"; } } addString = addString.TrimEnd('?'); addString = addString.ToUpper(); try { generalMethods callToMethod = new generalMethods(); callToMethod.writeInFiles(pathReadAnWrite, addString); MessageBox.Show("GUARDADDO CORRECTAMENTE"); } catch (Exception) { MessageBox.Show("ERROR AL GUARDAR"); } } else { MessageBox.Show("NO SE GUARDARA, NO EXISTEN DATOS"); } }