/// <summary>/// 生成试卷预览/// </summary>private void PreviewPapaer(){tabControl1.SelectedTabIndex = 1;//调整到预览选项卡
            richTextBox3.Clear();richTextBox4.Clear();try{//1.试卷名称、标题string sjtm = txtSjName.Text.Trim();richTextBox3.AppendText(sjtm + "\r\n\n");//试卷名称richTextBox3.Select(0, sjtm.Length);//选中范围richTextBox3.SelectionAlignment = HorizontalAlignment.Center;//居中ChangeFontSize(14, richTextBox3);//设置字体ChangeFont("宋体", richTextBox3);//设置字体大小string sjtitle = txtSjTitle.Text.Trim();richTextBox3.AppendText(sjtitle + "\r\n\n");//试卷标题        richTextBox3.Select(sjtm.Length, sjtitle.Length);//选中范围richTextBox3.SelectionAlignment = HorizontalAlignment.Center;//居中ChangeFontSize(12, richTextBox3);//设置字体ChangeFont("宋体", richTextBox3);//设置字体大小string answername = sjtm + "参考答案";richTextBox4.AppendText(answername + "\r\n");//答案试卷名称richTextBox4.Select(0, answername.Length);//选中范围richTextBox4.SelectionAlignment = HorizontalAlignment.Center;//居中ChangeFontSize(14, richTextBox4);//设置字体ChangeFont("宋体", richTextBox4);//设置字体大小//2.写入题型（一、单选题 二、多选题......）int xh = 0;DataTable dt = DataBaseAccess.GetDataTable("select * from base_tx order by sort");for (int i = 0; i < dt.Rows.Count; i++){int txid = Convert.ToInt32(dt.Rows[i]["id"]);//题型ID//datatable表中数据按sort排序DataRow[] rows = dtxz.Select("xztxid=" + txid, "xzsort asc");DataTable dttemp = dtxz.Clone();dttemp.Clear();foreach (DataRow dr2 in rows){dttemp.Rows.Add(dr2.ItemArray);}if (dttemp.Rows.Count != 0)//判断该类型是否选择了题目
                    {xh = xh + 1;richTextBox3.SelectionStart = richTextBox3.Rtf.Length;//选中richTextBox3的标题换行后新的行开头    ChangeFontSize(13, richTextBox3);//设置字体ChangeFont("宋体", richTextBox3);//设置字体大小                  string txmc = PublicStaticFun.NumberToChinese((xh).ToString()) + "、" + dt.Rows[i]["name"].ToString();richTextBox3.AppendText(txmc + dt.Rows[i]["contents"] + "\r\n");//添加题型号（大写）richTextBox4.AppendText(txmc + "\r\n");//添加答案题型号（大写）//循环读出题目内容、答案for (int k = 0; k < dttemp.Rows.Count; k++){//3.写入试题号（1、...）richTextBox3.AppendText((k + 1) + "、");//题目richTextBox4.AppendText((k + 1) + "、");//答案string sqlstr = @"select * from base_st where id=" + dttemp.Rows[k]["xzstid"] + "";DataTable dtst = DataBaseAccess.GetDataTable(sqlstr);//4.获取每题目、答案内容//获取题目内容if (dtst.Rows[0]["contents"].ToString() != ""){byte[] bWrite = (byte[])dtst.Rows[0]["contents"];//从数据库中读出数据//MemoryStream mstream = new MemoryStream(bWrite, false);//将数组转换成streamstring contents = System.Text.Encoding.UTF8.GetString(bWrite, 0, bWrite.Length);richTextBox3.SelectedRtf = contents;//关键 数据库中题目内容(rtf格式)
                            }//获取答案内容if (dtst.Rows[0]["answer"].ToString() != ""){byte[] bWrite2 = (byte[])dtst.Rows[0]["answer"];//从数据库中读出数据string anwer = System.Text.Encoding.UTF8.GetString(bWrite2, 0, bWrite2.Length);richTextBox4.SelectedRtf = anwer;}}}//换一类题型空一行richTextBox3.AppendText("\r\n");richTextBox4.AppendText("\r\n");     }}catch (Exception ex){MessageBoxEx.Show(ex.Message, "提示", MessageBoxButtons.OK, MessageBoxIcon.Error);}//CreateWordFile(@"F:\1.doc");}