private void 添加学籍信息ToolStripMenuItem_Click(object sender, EventArgs e)
 {
     this.Visible = true;
     //  m_connection.Close();
     添加学生学籍窗口     ScanForm = new 添加学生学籍窗口();
     DialogResult re       = ScanForm.ShowDialog();
 }
        /// <summary>
        /// 点击添加按钮,打开添加学生学籍窗口
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void Add_button_Click(object sender, EventArgs e)
        {
            FormAddN = new 添加学生学籍窗口();
            DialogResult re = FormAddN.ShowDialog();

            //如果添加了学籍信息,更新浏览学籍信息界面
            if (DialogResult.OK == re)
            {
                SqlDataAdapter da = new SqlDataAdapter(stuText, m_connection);
                DataSet        ds = new DataSet("s"); //创建dataset对象,调用指定数据集名称的构造函数
                da.Fill(ds, "stable");                //使用SqlDataAdapter对象的fill方法填充数据集,填充到“stable“表
                //dataGridView1.AutoGenerateColums = ture;
                //dataGridview控件绑定数据源
                dataGridView1.DataSource = ds;
                dataGridView1.DataMember = "stable";
            }
        }