C# winform 使用rdlc打印小票其中包含動態顯示多條形碼的解決方法

前言

最近做一個項目就是winform程序去控制設備，通過modbus-rtu協議去通訊。做的過程中上位機還牽扯到與其他系統對接的問題，當對接好其他系統數據后將數據打印出一個小票，上位機端用serialport來發送和接收下位機指令，下位機接收到上位機的發送的指令設備就做某個動作，設備動作完成將狀態發送給上位機，然后在winform界面呈現設備的狀態，整體的工作原理大概就是這樣子，具體業務就不方便寫入到博客中，打印的需求是隨着打印的內容長短決定打印紙的出紙長度，於是乎在winform中使用rdlc的想法就冒出來了，且看下面步驟

winform 使用rdlc打印小票其中包含動態顯示多條形碼步驟如下

1、 去nuget中download引用一個Microsoft.ReportingServices.ReportViewerControl.Winforms,通過nuget引入進來時會自動添加Microsoft.ReportViewer.WinForms、Microsoft.ReportViewer.Common.dll、Microsoft.ReportViewer.DataVisualization.dll、Microsoft.ReportViewer.Design.dll、Microsoft.ReportViewer.ProcessingObjectModel.dll,一共就是5個dll庫才能用LocalReport

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

2、添加rdlc文件，且設計rdlc參數和對象數據集，通過 “表” 組件來循環輸出數據，其中包括條碼，項目名稱等等內容，rdlc打印條碼，這里后台將數據傳輸到rdlc時需要將條碼圖片轉成條碼字節數組byte[]，然后在rdlc中放一個圖片組件，將數據集中條碼字節數組給到表達式中即可rdlc循環打印條碼輸出

 rdlc數據的組裝，條碼生成圖片要用到BarcodeLib.dll

rdlc自動打印條碼的結果

 

 rdlc打印小票其中包含動態顯示多條形碼具體實現代碼請看以下代碼 

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

            var XmlString = Utils.SoapReplace(Utils.ToTxt(resultStr));//解析數據源
            Utils.WriteCommandLog("LIS返回信息:" + XmlString);
            var result = Utils.DeserializeXmlToObject<Response>(XmlString);//xml數據源轉換Response對象
            if (result.Code == -1)            
                return;            
            var data = result.LabInfos;//Lis返回的數據結果   

            #region  回執單打印 
            LocalReport report = new LocalReport();
            //設置需要打印的報表的文件名稱。
            report.ReportPath = AppDomain.CurrentDomain.BaseDirectory + @"\receipt.rdlc";

            /*自動打印*/
            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;//要輸出的數據集
            ReportParameter DropPricePrint_rp1 = new ReportParameter("cnname", "李歐");
            ReportParameter DropPricePrint_rp2 = new ReportParameter("sex", "男");
            ReportParameter DropPricePrint_rp3 = new ReportParameter("age", "30歲");
            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
        }
        

根據字符串生成條碼圖片對象( 需添加引用：BarcodeLib.dll )

　　　　  /// <summary>
        /// 根據字符串生成條碼圖片( 需添加引用：BarcodeLib.dll )
        /// </summary>
        /// <param name="BarcodeString">條碼字符串</param>
        /// <param name="ImgWidth">圖片寬帶</param>
        /// <param name="ImgHeight">圖片高度</param>
        /// <returns></returns>
        public System.Drawing.Image CreateBarcodePicture(string BarcodeString, int ImgWidth, int ImgHeight)
        {
            BarcodeLib.Barcode b = new BarcodeLib.Barcode();//實例化一個條碼對象
            BarcodeLib.TYPE type = BarcodeLib.TYPE.CODE128;//編碼類型
            //獲取條碼圖片
            System.Drawing.Image BarcodePicture = b.Encode(type, BarcodeString, System.Drawing.Color.Black, System.Drawing.Color.White, ImgWidth, ImgHeight);
            b.Dispose();
            return BarcodePicture;
        }

RDLCPrinter  通過RDLC向默認打印機輸出打印報表

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>
    /// 通過RDLC向默認打印機輸出打印報表
    /// </summary>
    public class RDLCPrinter : IDisposable
    {
        /// <summary>
        /// 當前打印頁號
        /// </summary>
        static int m_currentPageIndex;

        /// <summary>
        /// RDCL轉換stream一頁對應一個stream
        /// </summary>
        static List<Stream> m_streams;

        /// <summary>
        /// 把report輸出成stream
        /// </summary>
        /// <param name="report">傳入需要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>
        /// 創建具有指定的名稱和格式的流。
        /// </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>
        /// 打印輸出
        /// </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>
        /// 打印預處理
        /// 打印機名稱： 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>
        /// 對外接口,啟動打印
        /// </summary>
        /// <param name="report">打印報表組件</param>
        /// <param name="printerName">打印機名稱</param>
        public static void Run(LocalReport report, string printerName)
        {
            m_currentPageIndex = 0;
            RDLCPrinter billPrint = new RDLCPrinter();
            billPrint.Export(report);
            billPrint.Print(printerName);
            billPrint.Dispose();
        } 
    }

}

 

當然這里也提供了源碼給您下載，如您需要請點擊 【rdlc動態打印多條形碼源碼例子】  提取碼: 6p5v

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