private void deleteDataFlatButton_Click(object sender, EventArgs e) { if (storageDataGridView.SelectedCells.Count > 0) { int storage_id = int.Parse(storageDataGridView.Rows[storageDataGridView.SelectedCells[0].RowIndex].Cells[0].Value.ToString()); int storage_data_id = int.Parse(storageDetailDataGridView.Rows[storageDetailDataGridView.SelectedCells[0].RowIndex].Cells[0].Value.ToString()); web.DeleteStorageData(storage_data_id); ReloadStorageDetailData(storage_id); } else { MessageBox.Show("Merci de sélectionner un stockage !"); } }