private void bt_delete_Click(object sender, EventArgs e) { if (str_flbh == "") { return; } if (str_flbh == "0000") { return; } ywszbiz.Delete_tj_sqdlx_hd(str_flbh); MessageBox.Show("删除成功!", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information); ClearControl(); str_flbh = ""; str_jcjylx = ""; tv_sqdlx.Nodes.Remove(tv_sqdlx.SelectedNode); }