C# winform 使用rdlc打印小票其中包含动态显示多条形码的解决方法

前言

最近做一个项目就是winform程序去控制设备，通过modbus-rtu协议去通讯。做的过程中上位机还牵扯到与其他系统对接的问题，当对接好其他系统数据后将数据打印出一个小票，上位机端用serialport来发送和接收下位机指令，下位机接收到上位机的发送的指令设备就做某个动作，设备动作完成将状态发送给上位机，然后在winform界面呈现设备的状态，整体的工作原理大概就是这样子，具体业务就不方便写入到博客中，打印的需求是随着打印的内容长短决定打印纸的出纸长度，于是乎在winform中使用rdlc的想法就冒出来了，且看下面步骤

winform 使用rdlc打印小票其中包含动态显示多条形码步骤如下

1、 去nuget中download引用一个Microsoft.ReportingServices.ReportViewerControl.Winforms,通过nuget引入进来时会自动添加Microsoft.ReportViewer.WinForms、Microsoft.ReportViewer.Common.dll、Microsoft.ReportViewer.DataVisualization.dll、Microsoft.ReportViewer.Design.dll、Microsoft.ReportViewer.ProcessingObjectModel.dll,一共就是5个dll库才能用LocalReport

https://www.nuget.org/packages/Microsoft.ReportingServices.ReportViewerControl.Winforms/150.1404.0?_src=template

2、添加rdlc文件，且设计rdlc参数和对象数据集，通过 “表” 组件来循环输出数据，其中包括条码，项目名称等等内容，rdlc打印条码，这里后台将数据传输到rdlc时需要将条码图片转成条码字节数组byte[]，然后在rdlc中放一个图片组件，将数据集中条码字节数组给到表达式中即可rdlc循环打印条码输出

 rdlc数据的组装，条码生成图片要用到BarcodeLib.dll

rdlc自动打印条码的结果

 

 rdlc打印小票其中包含动态显示多条形码具体实现代码请看以下代码 

 private void button1_Click(object sender, EventArgs e)
        {
            #region test method
            var fileurl = Application.StartupPath + @"data.txt";//数据源
            if (!File.Exists(fileurl))
            {
                MessageBox.Show("路径不存在");
                return;
            }
            var resultStr = File.ReadAllText(fileurl);
            #endregion

            var XmlString = Utils.SoapReplace(Utils.ToTxt(resultStr));//解析数据源
            Utils.WriteCommandLog("LIS返回信息:" + XmlString);
            var result = Utils.DeserializeXmlToObject<Response>(XmlString);//xml数据源转换Response对象
            if (result.Code == -1)            
                return;            
            var data = result.LabInfos;//Lis返回的数据结果   

            #region  回执单打印 
            LocalReport report = new LocalReport();
            //设置需要打印的报表的文件名称。
            report.ReportPath = AppDomain.CurrentDomain.BaseDirectory + @"
eceipt.rdlc";

            /*自动打印*/
            var list = new List<reportData>();
            for (int i = 0; i < data.Count; i++)
            {
                var item = data[i];
                var barcodearr = Utils.ImageToBytes(CreateBarcodePicture(item.LabNum, 418, 50));
                list.Add(new reportData()
                {
                    BarCode = item.LabNum,
                    BarCodeImageArr = barcodearr,
                    PatNo = item.HospNum,
                    Priority = item.Priority,
                    Source = item.Source,
                    TakeReportAddress = item.TakeReportAddress,
                    TakeReportDesc = item.TakeReportDesc,
                    TestItemDesc = item.TestItemDesc
                });
            }
            ReportDataSource reportDataSource = new ReportDataSource();
            reportDataSource.Name = "DataSet1";
            reportDataSource.Value = list;//要输出的数据集
            ReportParameter DropPricePrint_rp1 = new ReportParameter("cnname", "李欧");
            ReportParameter DropPricePrint_rp2 = new ReportParameter("sex", "男");
            ReportParameter DropPricePrint_rp3 = new ReportParameter("age", "30岁");
            ReportParameter DropPricePrint_rp4 = new ReportParameter("PrintTime", DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss"));
            ReportParameter DropPricePrint_rp5 = new ReportParameter("hospnum", "0001062975");

            report.SetParameters(new ReportParameter[] { DropPricePrint_rp1, DropPricePrint_rp2, DropPricePrint_rp3, DropPricePrint_rp4, DropPricePrint_rp5 });

            report.DataSources.Add(reportDataSource);
            report.Refresh();
            RDLCPrinter.Run(report, "Microsoft XPS Document Writer");
            #endregion
        }
        

根据字符串生成条码图片对象( 需添加引用：BarcodeLib.dll )

　　　　  /// <summary>
        /// 根据字符串生成条码图片( 需添加引用：BarcodeLib.dll )
        /// </summary>
        /// <param name="BarcodeString">条码字符串</param>
        /// <param name="ImgWidth">图片宽带</param>
        /// <param name="ImgHeight">图片高度</param>
        /// <returns></returns>
        public System.Drawing.Image CreateBarcodePicture(string BarcodeString, int ImgWidth, int ImgHeight)
        {
            BarcodeLib.Barcode b = new BarcodeLib.Barcode();//实例化一个条码对象
            BarcodeLib.TYPE type = BarcodeLib.TYPE.CODE128;//编码类型
            //获取条码图片
            System.Drawing.Image BarcodePicture = b.Encode(type, BarcodeString, System.Drawing.Color.Black, System.Drawing.Color.White, ImgWidth, ImgHeight);
            b.Dispose();
            return BarcodePicture;
        }

RDLCPrinter  通过RDLC向默认打印机输出打印报表

using System;
using System.Collections.Generic; 
using System.Drawing.Imaging;
using System.Drawing.Printing;
using System.IO; 
using System.Text;
using Microsoft.Reporting.WinForms;

namespace System
{
    /// <summary>
    /// 通过RDLC向默认打印机输出打印报表
    /// </summary>
    public class RDLCPrinter : IDisposable
    {
        /// <summary>
        /// 当前打印页号
        /// </summary>
        static int m_currentPageIndex;

        /// <summary>
        /// RDCL转换stream一页对应一个stream
        /// </summary>
        static List<Stream> m_streams;

        /// <summary>
        /// 把report输出成stream
        /// </summary>
        /// <param name="report">传入需要Export的report</param>
        private void Export(LocalReport report)
        {
            string deviceInfo =
              "<DeviceInfo>" +
              "  <OutputFormat>EMF</OutputFormat>" +
                //"  <PageWidth>8cm</PageWidth>" +
                //"  <PageHeight>20in</PageHeight>" +
                "  <MarginTop>0in</MarginTop>" +
                "  <MarginLeft>0in</MarginLeft>" +
                "  <MarginRight>0in</MarginRight>" +
                "  <MarginBottom>0in</MarginBottom>" +
              "</DeviceInfo>";
            Warning[] warnings;
            m_streams = new List<Stream>();
            report.Render("Image", deviceInfo, CreateStream, out warnings);
            foreach (Stream stream in m_streams)
                stream.Position = 0;
        }

        /// <summary>
        /// 创建具有指定的名称和格式的流。
        /// </summary>
        private Stream CreateStream(string name, string fileNameExtension, Encoding encoding, string mimeType, bool willSeek)
        {
            Stream stream = new FileStream(name + "." + fileNameExtension,
              FileMode.Create);
            m_streams.Add(stream);
            return stream;
        }

        /// <summary>
        /// 打印输出
        /// </summary>
        private void PrintPage(object sender, PrintPageEventArgs ev)
        {
            Metafile pageImage =
              new Metafile(m_streams[m_currentPageIndex]);
            ev.Graphics.DrawImage(pageImage, ev.PageBounds);
            m_currentPageIndex++;
            ev.HasMorePages = (m_currentPageIndex < m_streams.Count);
        }

        /// <summary>
        /// 打印预处理
        /// 打印机名称： Microsoft XPS Document Writer
        /// </summary>
        private void Print(string printerName)
        {
            PrintDocument printDoc = new PrintDocument();
            if (m_streams == null || m_streams.Count == 0)
                return;
            printDoc.PrinterSettings.PrinterName = printerName;
            if (!printDoc.PrinterSettings.IsValid)
            {
                string msg = String.Format("Can't find printer "{0}".", printerName);
                throw new Exception(msg);
            }
            printDoc.PrintPage += new PrintPageEventHandler(PrintPage);
            StandardPrintController spc = new StandardPrintController();//指定打印控制器
            printDoc.PrintController = spc;
            printDoc.Print();
        }

        public void Dispose()
        {
            if (m_streams != null)
            {
                foreach (Stream stream in m_streams)
                    stream.Close();
                m_streams = null;
            }
        }

        /// <summary>
        /// 对外接口,启动打印
        /// </summary>
        /// <param name="report">打印报表组件</param>
        /// <param name="printerName">打印机名称</param>
        public static void Run(LocalReport report, string printerName)
        {
            m_currentPageIndex = 0;
            RDLCPrinter billPrint = new RDLCPrinter();
            billPrint.Export(report);
            billPrint.Print(printerName);
            billPrint.Dispose();
        } 
    }

}

当然这里也提供了源码给您下载，如您需要请点击 【rdlc动态打印多条形码源码例子】  提取码: 6p5v

对于rdlc如何打印小票其中包含动态显示多条形码的解决方法对你有用，那就拿去不用谢