private void 修改成绩信息ToolStripMenuItem_Click(object sender, EventArgs e)
 {
     this.Visible = true;
     //  m_connection.Close();
     浏览成绩信息窗口     ScanForm = new 浏览成绩信息窗口();
     DialogResult re       = ScanForm.ShowDialog();
 }
 private void button6_Click(object sender, EventArgs e)
 {
     this.Visible = false;
     浏览成绩信息窗口     Form1 = new 浏览成绩信息窗口();
     DialogResult re    = Form1.ShowDialog();
 }