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private void ok_Click(object sender, EventArgs e)
        {
            string sql = string.Format("select * from tb_Deps  inner join tb_Dep on tb_Dep.ID=tb_Deps.ID WHERE tb_Dep.cMaker like '%{0}%'", a.Text);//ͨ¹ýÊäÈëÖ÷±íµÄÓû§Ãû²éµ½¶ÔÓ¦×Ó±íID£¬À´ÏÔʾ¶ÔÓ¦Êý¾Ý
            dataAdapter = new SqlDataAdapter(sql, DBHelper1.HQconnection);
            DBHelper1.HQconnection.Open();
            dataAdapter.Fill(dataSet, "tb_Deps");
            dataGridView1.DataSource = dataSet.Tables["tb_Deps"];
            DBHelper1.HQconnection.Close();

        }
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  private void Save_Click(object sender, EventArgs e)
        {
            DialogResult result = MessageBox.Show
                ("È·¶¨±£´æÐÞ¸ÄÂð£¿", "²Ù×÷Ìáʾ", MessageBoxButtons.OKCancel, MessageBoxIcon.Question);
            if (result == DialogResult.OK)
            {
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