private void button1_Click(object sender, EventArgs e) { try { DialogResult dr = MessageBox.Show("确认要删除 面料号为:'" + cb_MianLiao.Text + "'的单耗表吗?", "提示", MessageBoxButtons.YesNo); if (dr == DialogResult.Yes) { cal.deletps(cb_MianLiao.Text); this.backgroundWorker1.RunWorkerAsync(); JingDu form = new JingDu(this.backgroundWorker1, "删除中");// 显示进度条窗体 form.ShowDialog(this); form.Close(); MessageBox.Show("删除成功!"); PeiSeBiaoLuru_Load(sender, e); cb_MianLiao.Text = cb_MianLiao.Text; comboBox1_SelectedIndexChanged(sender, e); } } catch (Exception ex) { //throw ex; MessageBox.Show(ex.Message); } }