label6.Text = "判断题数量：" + dt_试卷信息.Rows[0]["ps"].ToString();
                    label8.Text = "名词题数量：" + dt_试卷信息.Rows[0]["ms"].ToString();
                    label10.Text = "简答题数量：" + dt_试卷信息.Rows[0]["jds"].ToString();
                }
                _ID_试卷 = value;
            }}
        private void btn选择题_Click(object sender, EventArgs e)
        {
            if (ID_试卷 > 0)
            {
                S_试卷试题 s_试卷试题 = new S_试卷试题();
                s_试卷试题.ID_试卷 = ID_试卷;
                s_试卷试题.S_试题类型 = 0;
                s_试卷试题.LoadData();
                s_试卷试题.ShowDialog();
                ID_试卷 = ID_试卷;
            }
            else
                MessageBox.Show("试卷未保存，请先报存试卷信息.");
        }
        private void btn填空题_Click(object sender, EventArgs e)
        {
            if (ID_试卷 > 0)
            {
                S_试卷试题 s_试卷试题 = new S_试卷试题();
                s_试卷试题.ID_试卷 = ID_试卷;
                s_试卷试题.S_试题类型 = 1;
                s_试卷试题.LoadData();
                s_试卷试题.ShowDialog();
                ID_试卷 = ID_试卷;
            }
            else
                MessageBox.Show("试卷未保存，请先报存试卷信息.");
        }
        private void btn判断题_Click(object sender, EventArgs e)
        { 《计算机网络》课程通用题库管理系统设计与实现(18):http://www.751com.cn/jisuanji/lunwen_183.html