C#预览后打印问题。有碰到过这个问题没

Question

预览后打印只打印当前显示的一页，预览数据有多页，可以在菜单栏上翻下翻查看。直接打印的话没问题，是打印多页。
 网上说的解决方案都是重新画一遍，在画方法里面用e.HasMorePages来控制是否有更多页。 但是我在预览的时候已经画过一次，不想在点预览上面的打印按钮时在去重新执行画方法。现在就有没有可能，直接点菜单栏的打印按钮，就打印出所有的页面出来。。 弄了跟多办法， 就是没达到效果。beginprint事件里面取消打印，然后new一个新的document，printpage后print，这个。。 这个， 出来是空白页面。，还有tStrip.Items[0].MouseDown +=新打印， 一样空白页面。下面部分代码， 像word里面的打印预览，如果多页的话是出现的一个下滑条，所有页都直接列出来的，可否实现这样的效果， 或是有别的更好的效果？ 谢谢了， 分也不知道还剩多少， 可能叙述多了反而不清楚了， 如果有疑问可以回复提问。 谢谢。 docToPrint = new PrintDocument();
            docToPrint.PrintPage += new PrintPageEventHandler(printDoc_PrintPage);
            //docToPrint.BeginPrint += new PrintEventHandler(BegPrint);
            //docToPrint.EndPrint += new PrintEventHandler(EndsPrint);
            this.pageSetupDialog1.Document = docToPrint;
            DialogResult ds = this.pageSetupDialog1.ShowDialog();
                if (checkBoxyl.Checked)//打印前预览
                {                    prd = new PrintPreviewDialog();
                    prd.Document = docToPrint;
                    ToolStrip tStrip = (ToolStrip)prd.Controls[1];
                    //tStrip.Items[0].MouseDown += new MouseEventHandler(moustdown);重新执行画方法进行打印
                    prd.PrintPreviewControl.Zoom = 1;//设置打印预览为100%
                    if (ds == DialogResult.OK)
                    {
                        prd.Document.PrinterSettings = pageSetupDialog1.PrinterSettings;//设置选择的打印机
                        //IsYl = true;是否预览
                        prd.ShowDialog();
                    }
                }
                else
                {
                    if (ds == DialogResult.OK)
                    {
                        docToPrint.PrinterSettings = pageSetupDialog1.PrinterSettings;
                        docToPrint.DefaultPageSettings = pageSetupDialog1.PageSettings;
                        //docToPrint.DefaultPageSettings = pageSetupDialog1.PageSettings;
                        docToPrint.EndPrint += new PrintEventHandler(EndsPrint);
                        this.printDialog1.Document = docToPrint;
                        DialogResult result = this.printDialog1.ShowDialog();
                        if (result == DialogResult.OK)
                        {
                            docToPrint.Print();
                        }
                    }
                }

Answer 1

在docToPrint.BeginPrint事件中重置多页打印时用于控制页面的循环变量 

Answer 2

 请问， 这个是否可以理解为控制 HasMorePages ？

Answer 3

比如,你自定义一个窗口级变量用于控制HasMorePages
private int n=0;
而你打印的页有m页;
PrintPage事件中:
{
n++;//当前页码
//执行打印绘制代码
e.HasMorePage=(n!=m);//如果当前页码等于总页数,结束打印绘制,否则打印下一页
}
这种情况下,你需要在Begin事件中,重置n为0,因为你点击打印预览中的打印按钮时,n的当前值与m是相同的,导致PrintPage在执行完一次后,e.HasMorePage已经是false了我估计你摸述的情况的原因和我描述的原理差不多,具体原因出在哪,需要你提供printDoc_PrintPage的代码中e.HasMorePage赋值的判断部分,即,你是通过什么决定e.HasMorePage=true或false的

Answer 4

关键是 这个是在打印自定义的条码。 不是单纯的打印数据报表。 一定得用Graphics

Answer 5

 星星， 星星。 弄好了。 。 。但是。。 还是重新去执行了PrintPage事件。我发下我的PrintPage事件代码。 
void printDoc_PrintPage(object sender, PrintPageEventArgs e)
{
            int[] number = new int[marterialName.Count];//打印张数
            int[] residue = new int[marterialName.Count];//求余
            topPagesLocationX = 0;
            topPagesLocationY = 0;
            HostControl hc = CurrentDocumentsHostControl;
            IDesignerHost idh = (IDesignerHost)hc.DesignerHost.GetService(typeof(IDesignerHost));
            Control rootControl = (Control)idh.RootComponent;
            string strSql = string.Empty;
            if (isBeLongBill)
            {
                DialogResult dr = MessageBox.Show("您的方案没有活动的数据,是否继续?", "Fesem 提示", MessageBoxButtons.YesNo, MessageBoxIcon.Information);
                if (DialogResult.Yes == dr)
                {
                    DrawTabPageImageNotDate(e, idh, rootControl);
                    return;
                }
                else
                {
                    return;
                }
            }
            else if (orderNo.Count < 1)
            {
                DrawTabPageImageNotDate(e, idh, rootControl);
                return;
            }            if (Convert.ToInt32(labelCount1[z])> 0)
            {
                rootControl.BackColor = Color.White;
                e.Graphics.FillRectangle(new SolidBrush(rootControl.BackColor), 0, 0, rootControl.Width, rootControl.Height);
            }
            Boolean selectBeLongBill = false;
            if (Convert.ToInt32(labelCount1[z]) > 0)
            {
                foreach (IComponent subControl in idh.Container.Components)
                {
                    if (subControl.GetType() == typeof(CustomLabel))
                    {
                        CustomLabel clst = subControl as CustomLabel;
                        if (clst.BeLongBill == "销售订单")
                        {
                            selectBeLongBill = true;
                        }
                        else
                        {
                            selectBeLongBill = false;
                        }
                        break;
                    }
                }                #region 按标签中的数量及出货数量算出此张订单要打印的数量.
                if ((int)openCount[z] > 0 && openCount[z].ToString() != "" && (int)labelCount1[z] > 0 && labelCount1[z].ToString() != "")
                {
                    number[z] = (int)openCount[z] / (int)labelCount1[z];
                    residue[z] = (int)openCount[z] % (int)labelCount1[z];
                }
                if (residue[z] > 0)
                    number[z] = number[z] + 1;
                #endregion                if (selectBeLongBill)
                {
                    //--------------------------------------------------------wfy
                    string[] strsa = new string[] { "exec fs_PsaleoutPrintBarCode_1  '{0}','{1}'", "exec fs_PsaleoutPrintBarCode_HK  '{0}','{1}'" };
                    strSql = string.Format(CommonLibrary.DatabaseAdd.GetSql(strsa), orderNo[z], marterialName[z]);
                }
                else
                {
                    //--------------------------------------------------------wfy
                    string[] strsa = new string[] { "exec fs_POutInHousePrintBarCode_1  '{0}','{1}'", "exec fs_POutInHousePrintBarCode_HK  '{0}','{1}'" };
                    strSql = string.Format(CommonLibrary.DatabaseAdd.GetSql(strsa), orderNo[z], marterialName[z]);
                }
                DataTable dt = DBHelper.ExecuteGetDataTable(CommandType.Text, strSql, null);
                int rownum = -1;//当前行号
                if (billno == "")//这里判断是否是同一订单，不是的话rowsnum清零
                {
                    billno = orderNo[z].ToString();
                }
                else if (billno != orderNo[z].ToString())
                {
                    billno = orderNo[z].ToString();
                    rowsnum = 0;
                }
                bool notsaleispch = false;
                if (dt != null && dt.Rows.Count > 0)
                {
                    if (!selectBeLongBill)
                    {
                        if (dt.Rows[0]["forderbillno"].ToString().IndexOf(seordstr) >= 0)
                        {
                            //原单号
                            string yuandanhao = dt.Rows[0]["forderbillno"].ToString();
                            //出入库单号
                            string churukudanhao = dt.Rows[0]["fbillno"].ToString();
                            //
                            string asql = "select sum(fqty) from icstockbill t1 inner join icstockbillentry t2 on t1.finterid = t2.finterid where fbillno < '" + churukudanhao + "' and forderbillno = '" + yuandanhao + "'";
                            object yqnum = DBHelper.ExecuteScalar(CommandType.Text, asql, null);
                            //object thisnum = dt.Rows[0]["fauxqty"];//fauxqty
                            //
                            int take;//要取值的条数
                            int skip;//要跳过的条数
                            try
                            {
                                take = number[z];
                                skip =yqnum.ToString()!=""? Convert.ToInt32(yqnum) / (int)labelCount1[z]:0;
                            }
                            catch (Exception)
                            {
                                throw;
                            }
                            string sqlad = "select top " + take + " * from fsxsck  where ckid not in (select top " + skip + " ckid from fsxsck where  ponumber='" + yuandanhao + "'   ) and ponumber='" + yuandanhao + "' ";                            DataTable dt1 = DBHelper.ExecuteGetDataTable(CommandType.Text, sqlad, null);
                            if (dt1.Rows.Count > 0)
                            {
                                notsaleispch = true;
                                DataTable dts = dt.Copy();
                                dt.Rows.Clear();
                                foreach (DataRow item in dt1.Rows)
                                {
                                    DataRow newrow = dt.NewRow();
                                    dts.Rows[0]["pch"] = item["Lotnum"];
                                    //newrow["pch"] = item["Lotnum"];
                                    newrow.ItemArray = dts.Rows[0].ItemArray;
                                    dt.Rows.Add(newrow);
                                }
                            }
                        }
                        
                    }
                    foreach (DataRow dr in dt.Rows)
                    {
                        //-----------------
                        if (selectBeLongBill||notsaleispch)
                        {
                            if (dt.Rows.Count > 1)
                            {
                                rownum++;
                                if (rowsnum != rownum)
                                {
                                    continue;
                                }
                            }
                        }
                            //具体画操作
                          rowsnum++;
                       }
                }
                else
                {
                    DrawTabPageImageNotDate(e, idh, rootControl);
                }
            }
            if (z <orderNo.Count)
            {
                if(Convert.ToInt32(labelCount1[z])>0)
                    zForCount++;
                if (w[z] >= number[z])
                {
                    e.HasMorePages = false;
                }
                else 
                {
                    e.HasMorePages = true;
                    w[z]++;
                    return;
                }
                if (Convert.ToInt32(inBoxCount[z]) > 0 && zForCount == w[z])
                {
                    labelCount1 = inBoxCount;
                    wz = w[z];
                    w[z] = 1;
                    e.HasMorePages = true;
                    return;
                }
                if (Convert.ToInt32(outBoxCount[z]) > 0 && zForCount == wz + w[z])
                {
                    labelCount1 = outBoxCount;
                    outZ = w[z];
                    w[z] = 1;
                    e.HasMorePages = true;
                    return;
                }
                if (this.radioButton3.Checked && zForCount == outZ+wz + w[z]) 
                {
                    labelCount1 = openCount;
                    w[z] = 1;
                    e.HasMorePages = true;
                    return;
                }
                z++;
                wz = 0;
                outZ = 0;
                zForCount = 0;
                if (z < orderNo.Count) 
                {
                    labelCount1 = labelCount;
                    w[z] = 1;
                    e.HasMorePages = true;
                    return;
                }
                else
                {
                    e.HasMorePages = false;
                    z = 0;
                }
            }
        }