代码
/// <summary> /// 打印帮助类 /// </summary> public class PrintHelper { private int m_currentPageIndex; private IList<Stream> m_streams; /// <summary> /// 报表直接打印 /// </summary> /// <param name="reportPath">报表文件路径</param> /// <param name="printerName">打印机名称</param> /// <param name="dt">DataTable</param> /// <param name="sourceName">rdlc的数据集名称</param> /// <param name="paraList">参数列表</param> public void Run(string reportPath, string printerName, DataTable dt, string sourceName, List<ReportParameter> paraList) { LocalReport report = new LocalReport(); report.ReportPath = reportPath; report.DataSources.Add(new ReportDataSource(sourceName,dt)); report.EnableExternalImages = true; report.SetParameters(paraList); Export(report); m_currentPageIndex = 0; Print(printerName); } private void Export(LocalReport report) { string deviceInfo = "<DeviceInfo>" + " <OutputFormat>EMF</OutputFormat>"+ "</DeviceInfo>"; Warning[] warnings; m_streams = new List<Stream>(); try { report.Render("Image", deviceInfo, CreateStream, out warnings); } catch (Exception ex) { Exception innerEx = ex.InnerException; while (innerEx != null) { string errmessage = innerEx.Message; innerEx = innerEx.InnerException; } } foreach (Stream stream in m_streams) { stream.Position = 0; } } private Stream CreateStream(string name, string fileNameExtension, Encoding encoding, string mimeType, bool willSeek) { Stream stream = new FileStream(name + DateTime.Now.Millisecond + "." + fileNameExtension, FileMode.Create); m_streams.Add(stream); return stream; } private void Print(string printerName) { if (m_streams == null || m_streams.Count == 0) return; PrintDocument printDoc = new PrintDocument(); if (printerName.Length > 0) { printDoc.PrinterSettings.PrinterName = printerName; } foreach (PaperSize ps in printDoc.PrinterSettings.PaperSizes) { if (ps.PaperName == "A4") { printDoc.PrinterSettings.DefaultPageSettings.PaperSize = ps; printDoc.DefaultPageSettings.PaperSize = ps; } } if (!printDoc.PrinterSettings.IsValid) { string msg = string.Format("找不到打印机：{0}",printerName); LogUtil.Log(msg); return; } printDoc.PrintPage += new PrintPageEventHandler(PrintPage); printDoc.Print(); } private void PrintPage(object sender, PrintPageEventArgs ev) { Metafile pageImage = new Metafile(m_streams[m_currentPageIndex]); ev.Graphics.DrawImage(pageImage, 0, 0, 827, 1169);//像素 m_currentPageIndex++; ev.HasMorePages = (m_currentPageIndex < m_streams.Count); } }
说明
打印格式
string deviceInfo = "<DeviceInfo>" + " <OutputFormat>EMF</OutputFormat>" + " <PageWidth>210mm</PageWidth>" + " <PageHeight>297mm</PageHeight>" + " <MarginTop>5mm</MarginTop>" + " <MarginLeft>10mm</MarginLeft>" + " <MarginRight>10mm</MarginRight>" + " <MarginBottom>5mm</MarginBottom>" + "</DeviceInfo>";//这里是设置打印的格式 边距什么的
关于OutputFormat：
http://support.supermap.com.cn/DataWarehouse/WebDocHelp/6.1.3/iserverOnlineHelp/mergedProjects/iServerJavadoc/com/supermap/services/components/commontypes/OutputFormat.html
参考文章
http://www.cnblogs.com/bfyx/p/3279385.html （详细）
http://blog.csdn.net/moshuchao/article/details/2607017
http://www.cnblogs.com/qiuweiguo/archive/2011/08/26/2154706.html
收集另一文
http://www.cnblogs.com/hlxs/archive/2010/11/18/2087988.html
//初始化报表信息 private void SetReportInfo(string reportPath,string sourceName,DataTable dataSource,bool isFengPi) { if (!File.Exists(reportPath)) { MessageBox.Show("报表文件:" + reportPath + " 不存在!","提示", MessageBoxButtons.OK, MessageBoxIcon.Information); return; } if (dataSource == null || dataSource.Rows.Count == 0) { MessageBox.Show("没有找到案卷号为:"+txtArchiveNum.Text.Trim()+"的相关目录信息", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information); return; } pos = 1; LocalReport report1 = new LocalReport(); //设置需要打印的报表的文件名称。 report1.ReportPath = reportPath; if (isFengPi) { //设置参数 string archveTypeName = GetArchiveTypeName(); ReportParameter archiveType = new ReportParameter("ArchiveType", archveTypeName); report1.SetParameters(archiveType); } //创建要打印的数据源 ReportDataSource source = new ReportDataSource(sourceName, dataSource); report1.DataSources.Add(source); //刷新报表中的需要呈现的数据 report1.Refresh(); pos = 2; m_streams = new List<Stream>(); string deviceInfo ="<DeviceInfo>" + " <OutputFormat>EMF</OutputFormat>" + " <PageWidth>21cm</PageWidth>" + " <PageHeight>29.7cm</PageHeight>" + " <MarginTop>2.0066cm</MarginTop>" + " <MarginLeft>2.0066cm</MarginLeft>" + " <MarginRight>2.0066cm</MarginRight>" + " <MarginBottom>2.0066cm</MarginBottom>" + "</DeviceInfo>"; Warning[] warnings; //将报表的内容按照deviceInfo指定的格式输出到CreateStream函数提供的Stream中。 report1.Render("Image", deviceInfo, CreateStream, out warnings); } //声明一个Stream对象的列表用来保存报表的输出数据 //LocalReport对象的Render方法会将报表按页输出为多个Stream对象。 private List<Stream> m_streams; //用来提供Stream对象的函数，用于LocalReport对象的Render方法的第三个参数。 private Stream CreateStream(string name, string fileNameExtension, Encoding encoding, string mimeType, bool willSeek) { pos = 3; //如果需要将报表输出的数据保存为文件，请使用FileStream对象。 Stream stream = new MemoryStream(); m_streams.Add(stream); return stream; } //用来记录当前打印到第几页了 private int m_currentPageIndex; #region 打印报表 private void Print() { pos = 4; m_currentPageIndex = 0; if (m_streams == null || m_streams.Count == 0) return; //声明PrintDocument对象用于数据的打印 PrintDocument printDoc = new PrintDocument(); //指定需要使用的打印机的名称，使用空字符串""来指定默认打印机 // printDoc.PrinterSettings.PrinterName = ""; //判断指定的打印机是否可用 if (!printDoc.PrinterSettings.IsValid) { MessageBox.Show("没有找到打印机!","提示",MessageBoxButtons.OK,MessageBoxIcon.Information); return; } pos = 5; printDoc.PrintPage += new PrintPageEventHandler(PrintPage); //执行打印操作，Print方法将触发PrintPage事件。 printDoc.Print(); //释放资源 foreach (Stream stream in m_streams) { stream.Dispose(); stream.Close(); } m_streams = null; } private void PrintPage(object sender, PrintPageEventArgs ev) { pos =6; //Metafile对象用来保存EMF或WMF格式的图形， //我们在前面将报表的内容输出为EMF图形格式的数据流。 m_streams[m_currentPageIndex].Position = 0; Metafile pageImage = new Metafile(m_streams[m_currentPageIndex]); //指定是否横向打印 ev.PageSettings.Landscape = false; //这里的Graphics对象实际指向了打印机 ev.Graphics.DrawImage(pageImage, ev.PageBounds); m_streams[m_currentPageIndex].Close(); m_currentPageIndex++; //设置是否需要继续打印 ev.HasMorePages = (m_currentPageIndex < m_streams.Count); } #endregion //打印封皮 private void btPrint_Click(object sender, EventArgs e) { string reportPath = Application.StartupPath + "\\Files\\ReportEnvelop.rdlc"; SetReportInfo(reportPath, "DataSet1", GetDataSource(true), true); Print(); }
