private void bt_find_Click(object sender, EventArgs e) { if (txt_djlsh.Text.Trim() == "") { MessageBox.Show("请填写登记流水号!", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information); return; } str_djlsh = txt_djlsh.Text.Trim(); DataTable dt = lisbiz.Get_TJ_TJDJB1(str_djlsh); if (dt.Rows.Count < 1) { MessageBox.Show("该登记流水号不存在,请检查!", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information); txt_djlsh.Text = ""; return; } txt_xm.Text = dt.Rows[0]["xm"].ToString().Trim(); txt_nl.Text = dt.Rows[0]["nl"].ToString().Trim(); txt_xb.Text = dt.Rows[0]["xb"].ToString().Trim(); str_tjzt = dt.Rows[0]["sumover"].ToString().Trim(); cmb_zhxm.SelectedIndexChanged -= new EventHandler(cmb_zhxm_SelectedIndexChanged); cmb_zhxm.DataSource = lisbiz.Get_TJ_BBDJB(str_djlsh); cmb_zhxm.DisplayMember = "mc"; cmb_zhxm.ValueMember = "zhxm"; cmb_zhxm.SelectedValue = -1; cmb_zhxm.SelectedIndexChanged += new EventHandler(cmb_zhxm_SelectedIndexChanged); }