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快餐刷卡消费之触摸屏实现(含关键源码)

时间:2016-04-29 19:37:25      阅读:194      评论:0      收藏:0      [点我收藏+]

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本项目为连锁店餐饮系统。前台C#,服务器采用Java开发,oracle数据库;通过webservice实现前后台的交互,后台以提供服务的方式,供前端调用并进行数据库操作。

商家根据餐饮副食店实际情况提出了新的需求,希望能够通过在店内放置触摸屏的方式,使会员顾客能够以触摸屏的方式选择商品并放入自己的购物车,之后售货员只需要读取卡内的购物车信息即可刷卡消费,这样大大节约了顾客挑选商品的时间,使整个购物流程并行化程度提高。由于顾客消费的时间大多集中在早中晚,并行化会使店内的销售量显著提高。

经过一周的时间终于完成了模块的更新,下面我将分4个方面详细的描述整个流程,并附上关键部分源码,分享给大家共同学习。

1.功能模块介绍;2,触屏设置实现(前台、服务器、数据库);3,触屏显示实现;4,触屏结算实现


一 功能模块介绍:

展柜设置(包括4个子模块)

1.1 触屏设置(管理员操作)

本子模块包括4项功能:

——选择:根据门店编号mdbh从数据库消费记录表和物料表中获取外卖记录,显示在combox中;

——插入:管理员从combox中选取要显示的商品图片,获取该图片的绝对路径,以记录的方式插入到config.txt文本中,每个图片代表一条记录

——删除:删除TXT文档中对应的条目。

——保存:将当前Imagelistview中的商品图片信息保存成TXT文档,存储在项目的指定目录下。

1.2 触屏显示(顾客操作)

本模块中,自动加载“触屏设置”中保存的TXT文档,读取其中的记录并将对应的图片全屏显示;双击图片会进入商品细节页面,在本界面,顾客可以选择”加入购物车“或”返回“,本页面能够显示库存量,若库存量《0,点击返回后对应图片将显示售罄。

同时设置两个按钮“上一页”,“下一页”,通过点击可以实现翻页查看。

(注:顾客通过本显示屏可以看到本店内所有的商品信息,并有选择的加入到自己卡的购物车中)

1.3 触屏结算(售货员操作)

本模块包括3项功能:

——读卡:售货员点击“读卡”,系统将卡内的购物车信息显示在购物车栏中;

——修改:删除菜品:售货员可以对购物车中的商品调整数量或删除

——结算:对IC卡的购物车商品结算,同时删除数据库中对应的购物车信息,执行卡金额操作,并打印小票。

1.4 图片下载(管理员操作)

通过FTP的方式,管理员可以从指定的FTP目录中选择图片,加入本门店的图片库中,供展柜设置使用。

总体界面设计:

技术分享

1.5 总体流程:

前台:主要是画界面,写webservice调用方法,逻辑实现;

服务器端:若无对应的服务,则注册webservice服务(1.在sun-jaxws.xml 中通过endpoint注册;2.在对应的服务加入注解@webservice和@HandlerChain和@webMethod,注意名字要和xml中对应;注册完服务之后,通过具体的方法执行Sql语句操作数据库,反馈到前台,显示。

当思路清晰、宏观设计之后,具体的实现就是搬砖的过程,我们只需要一步步的根据需求完成模块即可。Let’s go!


二 触屏设置

 

2.1界面设计:

技术分享

2.2自动加载物料表,Combox显示

1.通过调用getYLData方法从数据库中获取物料数据存入List中

 private void initYL(String lb)
        {

            物料编号.Visible = true;
            ylComb.Visible = true;
            ylAddBtn.Visible = true;
            getYLData(lb); //设置物料表ylList

            if (ylList != null)
            {
                foreach (DataBean bean in ylList)
                {
                    //物料列表                  
                    this.ylComb.Items.Add(bean.GetValue("WL_WLBH") + "|" + bean.GetValue("WL_WLMC") + "|" + bean.GetValue("WL_3lMC") + "|" + bean.GetValue("WL_JLDW") + "|" + bean.GetValue("SL"));

                }
            }
        }

2.通过webservice调取服务MaterialService中的getDataFromXSJL方法获取物料数据,存入ArrayList中。

private void getYLData(string ALMC)
        {
            ServiceDelegate serviceDelegate = ServiceDelegateFactory.Instance();
            //ArrayList materialList = new ArrayList();
            try
            {
                ylList = (ArrayList)serviceDelegate.CommonInvoke("MaterialService", "getDataFromXSJL", ALMC);

                
            }
            catch (Exception ex)
            {
                if (ex is WebServiceException)
                {
                    if ((ex as WebServiceException).ExceptionType ==
                        EnumDefine.WebServiceException.ConnectException)
                    {
                        PopMessage.Error("EXC0009E", ConfigUtil.GetItemValue("ErrorMessageTitle"));
                    }
                    else
                    {
                        PopMessage.Error("EXC0006E", ConfigUtil.GetItemValue("ErrorMessageTitle"));
                    }
                }
                else
                {
                    throw ex;
                }
                return;
            }
            if (serviceDelegate.MessageList != null)
            {
                ServiceMessageBean popMessage = (ServiceMessageBean)serviceDelegate.MessageList[0];

                if (popMessage.Parameters != null)
                {
                    PopMessage.Error(popMessage.MessageCode, ConfigUtil.GetItemValue("ErrorMessageTitle"), popMessage.Parameters);
                }
                else
                {
                    PopMessage.Error(popMessage.MessageCode, ConfigUtil.GetItemValue("ErrorMessageTitle"));
                }

                serviceDelegate.MessageList.Clear();
            }
        }

3.服务器代码

MaterialService中的getDataFromXSJL方法:

public List getDataFromXSJL(String mdbh) throws Exception {
		List<?> resultList = dao.selectDataFromKCDL(mdbh);
		if (resultList == null || resultList.isEmpty()) {
			messages.add(new ServiceMessage(CommonConst.RESULTNULL));
			return null;
		} else {
			return resultList;
		}
	}

@Override
	public List<?> selectDataFromKCDL(String mdbh) throws SysException {
		StringBuffer sb = new StringBuffer();
		List<Object> argsList = new ArrayList<Object>();

		sb.append("select ");
		sb.append(" WL_WLBH,WL_WLMC,WL_3LMC, WL_JLDW,sum(DXFJL_SL) AS SL");
		sb.append(" from  ");
		sb.append("   T_JCZL_WL left join T_KWGL_DXFJL on  ");
		sb.append("   WL_WLBH=DXFJL_CPBH  AND  substr(DXFJL_XFLSH,0,?)=?");
		sb.append(" where ");
		sb.append("   WL_2lMC=?  ");
		sb.append(" group by WL_WLBH,WL_WLMC,WL_3LMC, WL_JLDW ");
//		sb.append("   WL_WLMC ");

		argsList.add(mdbh.length());
		argsList.add(mdbh);
		argsList.add("外卖");
	

		AppLog.logSystemInfo(WlDao.class, "selectDataBy1LMC", sb.toString()
				.replace('\'', '"'));
		List<?> list = (List<?>) sqlRunner
				.executeQuery(sb.toString(),argsList);
		return WsCommon.listConvert(list, sb.toString());
	}

2.3 插入和删除

操作和2.2类似.

2.4 保存

分析:声明configPic.txt配置文件和图片的存放位置,创建文件流和字节流,将2.2中插入的菜品所对应的图片的绝对路径存入txt文件中,然后将txt文件中保存的信息在触屏显示中读取。
private void saveBtn_Click(object sender, EventArgs e)
        {
            string filePath = Application.StartupPath + "/Pic/used/configPic.txt";
            string imagePath = Application.StartupPath + "/Pic/";

            if (dataGridView1.Rows.Count < 1)
                return;

            imageListView1.Items.Clear();
            FileStream fs = new FileStream(filePath, FileMode.Create);
            StreamWriter sw = new StreamWriter(fs);

            foreach (DataGridViewRow row in dataGridView1.Rows)
            {
                sw.WriteLine(imagePath+row.Cells["WL_WLBH"].Value.ToString() + ".jpg");
            }

            sw.Flush();//保护硬盘
            //关闭流
            sw.Close();
            fs.Close();
            this.toolStripStatusLabel.Text = "保存成功!";
            String[] fileLines = System.IO.File.ReadAllLines(filePath);
            imageListView1.Items.AddRange(fileLines);//触屏显示
        }

三 触屏显示

分析:1.显示txt中的图片信息2.增加双击事件,即双击图片可以查看其细节信息,并进入对应的窗体3.在商品细节窗体中可以把其“保存”进购物车,并返回。4.本界面显示库存余量,若<=0,点击返回后将自动将图片置换为售罄(通过字符串替换,修改config.txt文件中的内容)

3.1 按钮控制滚动条

        //导入dll用来控制鼠标上下移动
        [DllImport("user32.dll")]
        static extern void mouse_event(int flags, int dX, int dY, int buttons, int extraInfo);
        const int MOUSEEVENTF_WHEEL = 0x800;

        private void btnDown_Click(object sender, EventArgs e)
        {
            this.imageListView1.Focus();
            mouse_event(MOUSEEVENTF_WHEEL, 0, 0, -300, 0);
        }

        private void btnUp_Click(object sender, EventArgs e)
        {
            this.imageListView1.Focus();
            mouse_event(MOUSEEVENTF_WHEEL, 0, 0, 300, 0);
        }

3.2 “返回”按钮事件

        private void rtn_Click(object sender, EventArgs e)
        {        
            if (this.kc.Text == "0") {//判断当前的库存量
                string filePath = Application.StartupPath + "/Pic/used/configPic.txt";//配置文本文件
                string imagePath = Application.StartupPath + "/Pic/Out/" + _picId + "out.jpg";//Out文件夹存储售罄图片
                string imagePathUsed = Application.StartupPath + "/Pic/used/" + _picId + ".jpg";//当前显示的图片存储的文件夹
                string line;
                //通过字节流操作文件
                StreamReader sr1 = new StreamReader(filePath);
                string s = sr1.ReadToEnd();
                sr1.Close();

                StreamReader sr = new StreamReader(filePath);
                while ((line = sr.ReadLine()) != null)
                {
                    if (line.Equals(imagePathUsed)) {                     
                        sr.Close();
                        StreamWriter sw = new StreamWriter(filePath);
                        sw.WriteLine(s.Replace(imagePathUsed, imagePath).Trim());
                        sw.Flush();
                        sw.Close();
                        break;
                    }
                }
            }         
            base.MoveToNextForm(typeof(ShowBoxMain));
            this.Close();  
        }

四 触屏销售

4.1 模块展示:

分析:本模块设计的内容较多,主要包括1.读卡2.结算3.打印小票

技术分享

4.2 读卡

分析:关键点:1. CardOperation和CardDbOperation读取卡号和卡内数据(具体读卡操作略过,如有需要可以私信博主)2.通过方法getDataByGWC(ickh);获取卡内的购物车数据3.绑定数据源到dgv,注意将dgv中列的NAME属性和DataPropertyName属性一一对应,否则绑定失败。

 private void readBtn_Click(object sender, EventArgs e)
        {
            //点餐前检查是否有IC卡放置好
            DataBean dataTable1 = null;
            CardOperation co = new CardOperation();
            CardDbOperation codb = new CardDbOperation();
            string ickh = co.getICKH();
            this.ickh_txb.Text = ickh;
            if (ickh.Length < 2)
            {
                MessageBox.Show("请放好消费卡!");
                return;
            }
            dataTable1 = codb.getICCard(ickh);
            this.knye_txb.Text = dataTable1.GetValue("IC_CZYE").ToString();
            ///读卡之后,在购物车篮显示商品
            ///1.读取数据库getAllData返回map<key,value>
            ///2.将map显示到dgv上
            getDataByGWC(ickh);
            this.dinnerDetailDgv.DataSource = ServiceDelegate.ListToDataTable(resultList);
            int i = 0;
            foreach (DataGridViewRow row in dinnerDetailDgv.Rows)
            {
                DataGridViewRow dgr = dinnerDetailDgv.Rows[i];
                dgr.Cells["IC_ICKH"].Value = dinnerDetailDgv.Rows[i].Cells["IC_ICKH"].Value.ToString().Trim();
                i++;
            }
            RefreshTotal();
        }
//获取门店订单
        private void getDataByGWC(string ickh)
        {
            ServiceDelegate serviceDelegate = ServiceDelegateFactory.Instance();
            try
            {
                resultList = (ArrayList)serviceDelegate.CommonInvoke("CardService", "GetCaseByICKH", ickh);
            }
            catch (Exception ex)
            {
                return;
            }
            if (resultList == null)
            {
                ServiceMessageBean popMessage = (ServiceMessageBean)serviceDelegate.MessageList[0];

                if (popMessage.Parameters != null)
                {
                    PopMessage.Error(popMessage.MessageCode, ConfigUtil.GetItemValue("ErrorMessageTitle"), popMessage.Parameters);
                }
                else
                {
                    PopMessage.Error(popMessage.MessageCode, ConfigUtil.GetItemValue("ErrorMessageTitle"));
                }

                serviceDelegate.MessageList.Clear();
            }

        }

4.3 结算

///1.获取dgv上面的金额总数 ///2.操作卡内余额 ///3.删除该IC卡的GWC数据 ///4.打印小票,获取cgv上的数据

            if (dinnerDetailDgv.Rows.Count <= 0)
            {
                MessageBox.Show("购物车中无商品!");
                return;
            }
            //判断卡中金额是否足够,是则减掉金额,并作出卡和数据库的操作
            CardOperation co = new CardOperation();
            try
            {

                ickh = co.getICKH();

            }
            catch (Exception ex)
            {
                MessageBox.Show("读卡错误!");
                return;
            }

            DataBean dataBean = new DataBean();
            dataBean = getICCard(ickh);
            if (dataBean == null)
            {
                MessageBox.Show("该卡不存在!");
                return;
            }

            if (dataBean != null)
            {
                string dqzt = (string)dataBean.GetValue("IC_DQZT");
                if (dqzt != "已开卡")
                {
                    MessageBox.Show("该卡当前状态为" + dqzt + ",不可消费!");
                    return;
                }
            }
            string a = (string)dataBean.GetValue("IC_CZYE").ToString();

            double knye = NumberUtil.toDouble(dataBean.GetValue("IC_CZYE").ToString());

            //取得datagridview数据 
            ids = new string[dinnerDetailDgv.Rows.Count];
            names = new string[dinnerDetailDgv.Rows.Count];
            counts = new string[dinnerDetailDgv.Rows.Count];
            pricePerUnits = new string[dinnerDetailDgv.Rows.Count];
            prices = new string[dinnerDetailDgv.Rows.Count];

            string kplx = (string)dataBean.GetValue("IC_KPLX");
            xfje = 0;

            for (int i = 0; i < dinnerDetailDgv.Rows.Count; i++)
            {  // 逐条遍历数据
                ids[i] = (string)dinnerDetailDgv.Rows[i].Cells["GWC_CPBH"].Value;
                names[i] = (string)dinnerDetailDgv.Rows[i].Cells["CPML_CPMC"].Value;
                counts[i] = (string)dinnerDetailDgv.Rows[i].Cells["GWC_CPSL"].Value;
                pricePerUnits[i] = (string)dinnerDetailDgv.Rows[i].Cells["CPML_HYJ"].Value;

                if (kplx.Equals("会员卡"))
                {
                    prices[i] = (string)dinnerDetailDgv.Rows[i].Cells["CPML_HYJ"].Value;
                    xfje += NumberUtil.toDouble((string)dinnerDetailDgv.Rows[i].Cells["CPML_HYJ"].Value) * NumberUtil.toDouble(counts[i]);

                }
            }

            //判断余额是否足够
            if (xfje > knye)
            {
                MessageBox.Show("消费金额:" + xfje + " 可用余额:" + knye + " 。IC卡余额不足,请充值!");
                return;
            }

            //更改IC卡内的余额
            dataBean.setValue("IC_CZYE", knye - xfje);
            if (dataBean.GetValue("IC_BZ") == null)
                dataBean.setValue("IC_BZ", "备注信息");

            DataBean dataBean_MXFJL = new DataBean();
            dataBean_MXFJL.ColumnName = new string[17] { "MXFJL_LSH", "MXFJL_MDLSH", "MXFJL_MDBH", "MXFJL_ICKH", "MXFJL_XSYBH", "MXFJL_XFSJ", "MXFJL_XFJE", "MXFJL_XFBTJE", "MXFJL_XFCZJE", "MXFJL_BTYE", "MXFJL_CZYE", "MXFJL_JEDW", "MXFJL_JSZT", "MXFJL_JSDH", "MXFJL_BZ", "MXFJL_JSFS", "MXFJL_XFLX" };
            string czsj = CommonUtil.formatDateToStrDB(DateTime.Now);
            dataBean_MXFJL.ColumnValue = new string[17] { userInfo.ShopId + czsj, "1001", userInfo.ShopId, ickh, userInfo.UserId, czsj, xfje.ToString(), "0", "0", "0", (knye - xfje).ToString(), "元", "未结算", "0", "0", "1", "0" };

            ArrayList paramList = new ArrayList();
            int n = dinnerDetailDgv.Rows.Count;
            for (int i = 0; i < n; i++)
            {
                DataBean dataBean_detail = new DataBean();
                dataBean_detail.ColumnName = new string[12] { "DXFJL_LSH", "DXFJL_XFLSH", "DXFJL_CPBH", "DXFJL_DJ", "DXFJL_JJDW", "DXFJL_SL", "DXFJL_JLDW", "DXFJL_CPMC", "DXFJL_JE", "DXFJL_CQ", "DXFJL_ZCDJ", "DXFJL_BZ" };
                dataBean_detail.ColumnValue = new string[12] { i.ToString(), userInfo.ShopId + czsj, ids[i].ToString(), prices[i].ToString(), "元", counts[i].ToString(), "JLDW", names[i].ToString(), "0", "0", "0", "b" };
                paramList.Add(dataBean_detail);

            }


            //  卡操作
            //    je = co.CardSettlement(xfje);

            //**更改远程数据库*****

            //更新IC卡内余额,插入消费记录以及消费明细


            ServiceDelegate serviceDelegate = ServiceDelegateFactory.Instance();
            try
            { //
                serviceDelegate.CommonInvoke("CardService", "cardConsume", new Object[3] { dataBean, dataBean_MXFJL, paramList });

                // MessageBox.Show("员工发卡成功!");
            }
            catch (Exception ex)
            {
                if (ex is WebServiceException)
                {
                    if ((ex as WebServiceException).ExceptionType ==
                        EnumDefine.WebServiceException.ConnectException)
                    {
                        // 警告提示:网络出现问题,Web服务超时或无法连接
                        PopMessage.Error("COM0002W", ConfigUtil.GetItemValue("MessageTitle"));
                    }
                    else
                    {
                        // 警告提示:连接Web服务时发生系统异常
                        PopMessage.Error("COM0003W", ConfigUtil.GetItemValue("MessageTitle"));
                    }
                }
                if (ex is WebServiceException)
                {
                    if ((ex as WebServiceException).ExceptionType ==
                        EnumDefine.WebServiceException.ConnectException)
                    {
                        PopMessage.Error("EXC0009E", ConfigUtil.GetItemValue("ErrorMessageTitle"));
                    }
                    else
                    {
                        PopMessage.Error("EXC0010E", ConfigUtil.GetItemValue("ErrorMessageTitle"));
                    }
                }
                else
                {
                    throw ex;
                }

                return;
            }

            if (serviceDelegate.MessageList != null)
            {

                ServiceMessageBean popMessage = (ServiceMessageBean)serviceDelegate.MessageList[0];

                if (popMessage.Parameters != null)
                {
                    PopMessage.Error(popMessage.MessageCode, ConfigUtil.GetItemValue("ErrorMessageTitle"), popMessage.Parameters);
                }
                else
                {
                    PopMessage.Error(popMessage.MessageCode, ConfigUtil.GetItemValue("ErrorMessageTitle"));
                }

                serviceDelegate.MessageList.Clear();
            }
            double knye_new = knye - xfje;
            MessageBox.Show("欢迎光临,您此次消费共计" + xfje + "元,卡内余额为" + knye_new + "元,已结算成功!");

服务器端cardService的cardConsume方法:

// 业务 : 消费
	public void cardConsume(DataBean cardData, DataBean mxfjlData,
			ArrayList<DataBean> xfjlDetailList) {

		ICardDaoIF icDao = new ICardDao();
		MxfjlDaoIF dao = new MxfjlDao();
		DxfjlDaoIF xjjyDao = new DxfjlDao();
		// KeHuDaoIF kehuDao = new KeHuDao();

		int ic = 0;
		int czjl = 0;
		int xjjy = 0;
		int kehu = 0;
		try {
			if (cardData != null) {
				ic = icDao.updateICardData(cardData);
				if (ic != 1) {
					messages.add(new ServiceMessage(CommonConst.UPDATEFAIL));
					return;
				}
			}
			if (mxfjlData != null) {
				czjl = dao.insertDatas(mxfjlData);
				if (czjl != 1) {
					messages.add(new ServiceMessage(CommonConst.INSERTFAIL));
					return;
				}
			}
			if (xfjlDetailList != null && !xfjlDetailList.isEmpty()) {
				for (int i = 0; i < xfjlDetailList.size(); i++) {
					xjjy = xjjyDao.insertDatas(xfjlDetailList.get(i));
					if (xjjy != 1) {
						messages.add(new ServiceMessage(CommonConst.INSERTFAIL));
						return;
					}
				}
			}
		} catch (Exception e) {
			messages.add(new ServiceMessage(CommonConst.SYSTEM_ANOMALY));
			return;
		}
	}

@Override
	public int insertICardData(DataBean param) throws SysException {
		// 执行插入的Sql
		StringBuffer sb = new StringBuffer();
		// 放置参数的List
		List<Object> argsList = new ArrayList<Object>();
		// 根据业务组合生成Sql语句
		sb.append("INSERT INTO T_KWGL_IC"
				+ "(IC_ICKH,IC_WLBH,IC_MM,IC_CKRBH,IC_KPLX,IC_FKMDBH,IC_FKRBH,"
				+ "IC_FKSJ,IC_BTYE,IC_CZYE,IC_JEDW,IC_DQZT,IC_BZ,IC_ZK)VALUES");

		sb.append(" (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)");
		argsList.add(param.getValue("IC_ICKH"));

		argsList.add(param.getValue("IC_WLBH"));

		argsList.add(param.getValue("IC_MM"));

		argsList.add(param.getValue("IC_CKRBH"));

		argsList.add(param.getValue("IC_KPLX"));

		argsList.add(param.getValue("IC_FKMDBH"));

		argsList.add(param.getValue("IC_FKRBH"));

		argsList.add(param.getValue("IC_FKSJ"));

		argsList.add(param.getValue("IC_BTYE"));

		argsList.add(param.getValue("IC_CZYE"));

		argsList.add(param.getValue("IC_JEDW"));

		argsList.add(param.getValue("IC_DQZT"));

		argsList.add(param.getValue("IC_BZ"));

		argsList.add(param.getValue("IC_ZK"));

		AppLog.logSystemInfo(ICardDao.class, "insertICardData", sb.toString()
				.replace('\'', '"'));
		return sqlRunner.executeUpdate(sb.toString(), argsList);
	}

4.4 打印小票

分析:在结算之后,自动执行打印小票程序。主要是格式的编排,创建LPTControls对象,传入待打印字符串,操作小票机

//********打印小票***********
            double spsl = 0;
            LPTControls lpt = new LPTControls();
            //string mycommanglines = System.IO.File.ReadAllText("./print.txt");//print.txt里写了条码机的命令
            String printLines1 = "";
            String printLines2 = "";
            String printLines3 = "";


            printLines1 = "\n                 门店\n";
            printLines1 += "      " + userInfo.ShopId + "          " + userInfo.ShopName + "\n";
            printLines1 += "-------------------------------------\n";
            printLines1 += "    收 款 员: " + userInfo.UserId + "\n";
            printLines1 += "    卡    号:  " + ickh.ToString() + "\n";
            printLines1 += "-------------------------------------\n";
            printLines1 += "    单号 :" + czsj + "\n";
            printLines1 += "    品名       " + "   数量    " + "单价    " + "金额" + "\n";
            printLines1 += "-------------------------------------\n";

            for (int i = 0; i < dinnerDetailDgv.Rows.Count; i++)
            {
                double dj;
                try
                {
                    dj = NumberUtil.toDouble((string)dinnerDetailDgv.Rows[i].Cells["CPML_HYJ"].Value);

                }
                catch (Exception ex)
                {
                    throw ex;
                }
                if (((string)dinnerDetailDgv.Rows[i].Cells["CPML_CPMC"].Value).Length > 6)
                {
                    spsl += NumberUtil.toDouble((string)dinnerDetailDgv.Rows[i].Cells["GWC_CPSL"].Value);
                    int Slength = ((string)dinnerDetailDgv.Rows[i].Cells["CPML_CPMC"].Value).Length;
                    for (int j = 0; j < Slength; j = j + 4)
                    {
                        int addLength = j + 4;
                        if (addLength < Slength)
                        {
                            printLines2 += "  " + ((string)dinnerDetailDgv.Rows[i].Cells["CPML_CPMC"].Value).Substring(j, addLength) + "\n";
                        }
                        else
                        {
                            printLines2 += "  " + (((string)dinnerDetailDgv.Rows[i].Cells["CPML_CPMC"].Value).Substring(j, Slength - j)).PadRight(6, '\u3000');
                        }
                    }
                    printLines2 += "   " + ((string)(dinnerDetailDgv.Rows[i].Cells["GWC_CPSL"].Value)).PadRight(4, '\u3000') + (dj.ToString()).PadRight(8, ' ') + dinnerDetailDgv.Rows[i].Cells["CPML_HYJ"].Value + "\n";
                }
                else
                {
                    spsl += NumberUtil.toDouble((string)dinnerDetailDgv.Rows[i].Cells["GWC_CPSL"].Value);
                    printLines2 += "  " + ((string)dinnerDetailDgv.Rows[i].Cells["CPML_CPMC"].Value).PadRight(6, '\u3000') + "   " + ((string)(dinnerDetailDgv.Rows[i].Cells["GWC_CPSL"].Value)).PadRight(4, '\u3000') + (dj.ToString()).PadRight(8, ' ') + (string)(dinnerDetailDgv.Rows[i].Cells["price"].Value) + "\n";
                } // 其中 \u3000代表全角空格

                //printLines2 += "  "+dinnerDetailDgv.Rows[i].Cells[1].Value + "   " + dinnerDetailDgv.Rows[i].Cells[2].Value + "    " + dj.ToString() + "    " + dinnerDetailDgv.Rows[i].Cells[3].Value + "\n";
            }
            printLines3 += "-------------------------------------\n";
            printLines3 += "    数量合计:" + "  " + spsl.ToString() + "  件" + "\n";
            printLines3 += "    金额合计:" + "  " + xfje.ToString() + "  元" + "\n";
            printLines3 += "    卡内余额:" + "  " + knye_new.ToString() + "  元" + "\n";
            printLines3 += "-------------------------------------\n";

            printLines3 += "          期待您再次光临    \n";
            printLines3 += "\n\n\n\n\n\n\n\n";

            RawPrinterHelper.printLines1 = printLines1;
            RawPrinterHelper.printLines2 = printLines2;
            RawPrinterHelper.printLines3 = printLines3;
            RawPrinterHelper.count = 0;
            MessageBox.Show(printLines1 + printLines2 + printLines3);
            lpt.Open();
            lpt.Write(printLines1 + printLines2 + printLines3);
            lpt.Close();
            xfje = 0;
}
结算成功:

技术分享

本博文为博主原创

转载请注明转自:blog.csdn.net/mengzhengyu1025




快餐刷卡消费之触摸屏实现(含关键源码)

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原文地址:http://blog.csdn.net/mengzhengyu1025/article/details/51226389

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