private void btn_del_Click(object sender, EventArgs e) { if (MessageBox.Show("是否删除选中记录", "提示", MessageBoxButtons.YesNo, MessageBoxIcon.Asterisk) == DialogResult.Yes) { if (dgv_warehouseInfo.SelectedRows.Count > 0) { foreach (DataGridViewRow dgvr in dgv_warehouseInfo.SelectedRows) { doProjectName.Delete(long.Parse(dgvr.Cells["id"].Value.ToString())); } } query(); } }