private void tsmiAddResult_Click(object sender, EventArgs e)
        {
            FrmEditStudent fedit = new FrmEditStudent();

            fedit.studentNo = -1;
            fedit.Show();
        }
 /// <summary>
 /// 打开编辑学生信息窗体
 /// </summary>
 private void tsmiEdit_Click(object sender, EventArgs e)
 {
     if (this.lvResult.SelectedItems.Count > 0)
     {
         FrmEditStudent editStudent = new FrmEditStudent();
         // 将选中的学号传递到编辑学生信息窗体
         editStudent.studentNo = Convert.ToInt32(this.lvResult.SelectedItems[0].Text);
         editStudent.MdiParent = this.MdiParent;
         editStudent.Show();
     }
     else
     {
         MessageBox.Show("请选择一个学生!", CAPTION, MessageBoxButtons.OK, MessageBoxIcon.Information);
     }
 }