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
根据字符串生成条码图片对象( 需添加引用:BarcodeLib.dll )
////// 根据字符串生成条码图片( 需添加引用:BarcodeLib.dll ) //////条码字符串///图片宽带///图片高度///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 { ////// 通过RDLC向默认打印机输出打印报表 ///public class RDLCPrinter : IDisposable { ////// 当前打印页号 ///static int m_currentPageIndex; ////// RDCL转换stream一页对应一个stream ///static Listm_streams; ////// 把report输出成stream //////传入需要Export的reportprivate void Export(LocalReport report) { string deviceInfo = "" + "EMF" + //"8cm" + //"20in" + "0in" + "0in" + "0in" + "0in" + ""; Warning[] warnings; m_streams = new List(); report.Render("Image", deviceInfo, CreateStream, out warnings); foreach (Stream stream in m_streams) stream.Position = 0; } ////// 创建具有指定的名称和格式的流。 ///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; } ////// 打印输出 ///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); } ////// 打印预处理 /// 打印机名称: Microsoft XPS Document Writer ///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; } } ////// 对外接口,启动打印 //////打印报表组件///打印机名称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
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