C# WinForm RDLC報表不預覽直接連續打印

用微軟的RDLC報表直接打印不預覽

直接上代碼。

 //打印清單
                    System.Data.DataTable dt = print_QD(dr);
                    ReportViewer rvDoc = new ReportViewer();
                    rvDoc.LocalReport.ReportEmbeddedResource = "SD_bcso.Report.rdlc";//加上報表的路徑
                    rvDoc.LocalReport.DataSources.Add(new ReportDataSource(dt.TableName, dt));
                    PrintStream(rvDoc.LocalReport);

 /// <summary>
        /// 用來記錄當前打印到第幾頁了
        /// </summary>
        private int m_currentPageIndex;

        /// <summary>
        /// 聲明一個Stream對象的列表用來保存報表的輸出數據,LocalReport對象的Render方法會將報表按頁輸出爲多個Stream對象。
        /// </summary>
        private IList<Stream> m_streams;

        private bool isLandSapces = false;

        /// <summary>
        /// 用來提供Stream對象的函數，用於LocalReport對象的Render方法的第三個參數。
        /// </summary>
        /// <param name="name"></param>
        /// <param name="fileNameExtension"></param>
        /// <param name="encoding"></param>
        /// <param name="mimeType"></param>
        /// <param name="willSeek"></param>
        /// <returns></returns>
        private Stream CreateStream(string name, string fileNameExtension, Encoding encoding, string mimeType, bool willSeek)
        {
            //若是須要將報表輸出的數據保存爲文件，請使用FileStream對象。
            Stream stream = new MemoryStream();
            m_streams.Add(stream);
            return stream;
        }

        /// <summary>
        /// 爲Report.rdlc建立本地報告加載數據,輸出報告到.emf文件,並打印,同時釋放資源
        /// </summary>
        /// <param name="rv">參數:ReportViewer.LocalReport</param>
        public void PrintStream(LocalReport rvDoc)
        {
            //獲取LocalReport中的報表頁面方向
            isLandSapces = rvDoc.GetDefaultPageSettings().IsLandscape;
            Export(rvDoc);
            PrintSetting();
            Dispose();
        }

        private void Export(LocalReport report)
        {
            string deviceInfo =
            @"<DeviceInfo>
                 <OutputFormat>EMF</OutputFormat>
             </DeviceInfo>";
            Warning[] warnings;
            m_streams = new List<Stream>();
            //將報表的內容按照deviceInfo指定的格式輸出到CreateStream函數提供的Stream中。
            report.Render("Image", deviceInfo, CreateStream, out warnings);
            foreach (Stream stream in m_streams)
                stream.Position = 0;
        }

        private void PrintSetting()
        {
            if (m_streams == null || m_streams.Count == 0)
                throw new Exception("錯誤:沒有檢測到打印數據流");
            //聲明PrintDocument對象用於數據的打印
            PrintDocument printDoc = new PrintDocument();
            //獲取配置文件的清單打印機名稱
            System.Configuration.AppSettingsReader appSettings = new System.Configuration.AppSettingsReader();
            printDoc.PrinterSettings.PrinterName = appSettings.GetValue("QDPrint", Type.GetType("System.String")).ToString();
            printDoc.PrintController = new System.Drawing.Printing.StandardPrintController();//指定打印機不顯示頁碼 
            //判斷指定的打印機是否可用
            if (!printDoc.PrinterSettings.IsValid)
            {
                throw new Exception("錯誤:找不到打印機");
            }
            else
            {
                //設置打印機方向聽從報表方向
                printDoc.DefaultPageSettings.Landscape = isLandSapces;
                //聲明PrintDocument對象的PrintPage事件，具體的打印操做須要在這個事件中處理。
                printDoc.PrintPage += new PrintPageEventHandler(PrintPage);
                m_currentPageIndex = 0;
                //設置打印機打印份數
                printDoc.PrinterSettings.Copies = 1;
                //執行打印操做，Print方法將觸發PrintPage事件。
                printDoc.Print();
            }
        }

        /// <summary>
        /// 處理程序PrintPageEvents
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="ev"></param>
        private void PrintPage(object sender, PrintPageEventArgs ev)
        {
            //Metafile對象用來保存EMF或WMF格式的圖形，
            //咱們在前面將報表的內容輸出爲EMF圖形格式的數據流。
            Metafile pageImage = new Metafile(m_streams[m_currentPageIndex]);

            //調整打印機區域的邊距
            System.Drawing.Rectangle adjustedRect = new System.Drawing.Rectangle(
                ev.PageBounds.Left - (int)ev.PageSettings.HardMarginX,
                ev.PageBounds.Top - (int)ev.PageSettings.HardMarginY,
                ev.PageBounds.Width,
                ev.PageBounds.Height);

            //繪製一個白色背景的報告
            //ev.Graphics.FillRectangle(Brushes.White, adjustedRect);

            //獲取報告內容
            //這裏的Graphics對象實際指向了打印機
            ev.Graphics.DrawImage(pageImage, adjustedRect);
            //ev.Graphics.DrawImage(pageImage, ev.PageBounds);

            // 準備下一個頁,已肯定操做還沒有結束
            m_currentPageIndex++;

            //設置是否須要繼續打印
            ev.HasMorePages = (m_currentPageIndex < m_streams.Count);
        }

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